So far, my dabblings in the ritual traditions of Istanbul have consisted mainly of exploring the cem ceremony of the Alevis—itself a substantial topic, both in the city (here, with sequel) and around Anatolia. In its values, gender inclusiveness, and ritual style, Alevism is closely related to Bektashi beliefs, but is quite distinct from other Sufi orders (tariqa) active in Turkey.
An online article by Ömer Tuğrul İnançer makes a useful introduction to the ritual activities in Istanbul of orders such as Mevlevi, Halveti-Jerrahi, Qadiri, Sa’diyya, and Rifaî (see e.g. this extensive list of tekke lodges by order, and historically, by district).
Like other tariqat, the Naqshbandi order has a wide presence around west, central, and south Asia.  It is influential in Turkey, where it is largely urban, supported by literati, bureaucrats, and merchants.There its pronouncements evince a less than liberal strain, vocally opposing perceived social decadence; opposing Westernising reforms, its leaders are critical of “heterodoxy”.
Hakan Yavuz, in his chapter “The matrix of modern Turkish Islamic movements: the Naqshbandi Sufi order”, observes that “the Sufi orders have turned out to be the major institutions for the aggregation of economic and political interests”. Focusing on Istanbul, he considers the Naqshbandis under the rubrics of inner cultivation and religious salvation, a tool for upward mobility, a network for social and political services, and a model for a community—headings that one might well apply to other orders too.
Concentration on God (Yaddasht). Source.
As to the Ottoman background, Sultan Mahmud II (1808–37), suspicious of charismatic popular leaders and competing loyalties within the state, banned the Naqshbandiyya-Khalidiyya order in Istanbul, as well as the Bektashis. But under later Sultans the Naqshbandis expanded their influence, often taking over Bektashi lodges, becoming “one of the most important forces between ruled and ruler”.
In the early years of the Republic, despite their support for Atatürk’s War of Liberation, the Naqshbandi and other Sufi lodges were banned. Still, their
ability to adjust to new situations and to develop new arguments neutralises the hostile propaganda of opponents who seek to identify the movement as fundamentalist or an “enemy” of modernity. For example, the Naqshbandis fully supported the Turkish War of Independence but protested against the radical and authoritarian secular transformation of the system by Mustafa Kemal.
Most of the eighteen rebellions against state policies between 1924 and 1938 were led by the Naqshbandiyya. But they were better able to survive persecution than some other orders.
In response to repression, most of these orders gradually transformed from strictly religious associations into competing educational and cultural informal associations with religious underpinnings. They gathered support from sections of traditional society, which regarded the Kemalist variant of secularisation as too radical and destructive for Turkey’s social fabric.
Indeed, “the post-Republican elite, which shaped the opinion and identity of the leading Muslim movements, evolved among local Naqshbandi groups in Istanbul and Anatolia”, and “the Turkish Muslim understanding of Islam is very much filtered through Naqshbandi concepts and institutions”. In modern Turkey, Naqshbandi is the most politically active of the Sufi orders; like others, they are closely involved in education, healthcare, commerce, and media promotion. Of the four main branches in Istanbul, most wealthy and influential is the lskenderpaşa, based at their Mosque in Fatih. But Hakan Yavuz argues that the remarkable adaptive powers and pragmatism of the Naqshbandi
may lead to decline, not so much because of state suppression or rivalry from other orders, but because of its smooth adaptation to capitalism and its integral involvement in Turkish politics, both of which may undermine the spiritual and cultural aspects of the order.
As he suggests, along with a reduction in the mystical and heterodox features of Islam and Sufism, Islam has been delocalised and a new, abstract, highly centralised and economically conscious faith created to cater for the modern urban population.
On the Anatolian side of Istanbul, we visited the village of Beylerbeyi, just along the Bosphorus from Üsküdar and Kuzguncuk, to attend the Thursday evening dhikr (zikr) ritual at a Naqshbandi dergah (see here, and wiki), where Sheikh Mesud Efendi (d.1908) was influential. Set in a picturesque old quarter up the hill, the wooden building is just as fine.
The practice of collective dhikr (zikr) is intense. Among the Naqshbandiyya it is traditionally classified as either khafi “silent” or jahri “loud”; they seem to find both acceptable—see e.g. Isenbike Togan’s chapter on the historical controversy between them in Central Asia, n.1 below.
Glimpses from the women’s gallery.
Directing prostrations in a packed hall, the sheikh chanted a series of invocations, with occasional simple group responses. As the lights were switched off, the worshippers turned to sit in a circle facing the sheikh, the repetitive group invocations becoming more intense. In a segregated area on the upper floor a substantial group of women was also deeply devout, as my companions reported.
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With such a very basic grounding in live ritual, I turned to YouTube for the wider picture, where several videos suggest the deeply immersive somatic experience of Naqshbandi dhikr. In her Introduction (n.1 below), Elisabeth Özdalga observes:
Many Sufi orders practice the dhikr collectively, with intensive and emotion-laden expressions, where the partakers move their bodies rhythmically as they loudly pronounce the names of Allah. The Naqshbandis are traditionally known for greater self-restraint. […] [They] have generally been regarded as more sober and orderly in their religious practices than other Sufis.
I can’t assess this as a general characterisation, but from the clips below it seems to need modifying. This substantial excerpt from a haḍra ritual in Bosnia is well annotated, featuring both Arabic qasidahs and Turkish ilahis:
Still more imbued with emotive expression are the rituals of Uyghur Naqshbandis, in a region of Central Asia that was invaded by the Chinese Communists in 1949. In retrospect, the Chinese state’s approach towards Islam in the decades before the clampdown under Xi Jinping may now appear relatively benign (see here). This zikr was recorded by Jean During in southwest Xinjiang in 1988, during a period when Uyghur traditions were enjoying an impressive revival after the end of the Cultural Revolution:
And the remarkable excerpts below show Uyghur Naqshbandis performing zikr in south Xinjiang on the eve of the Chinese campaign to obliterate Uyghur culture:
As to the Western diaspora, Naqshbandi groups meet in Europe and north America (cf. Alevi ritual), such as the Osmanli Dergahi in New York, transmitting the teachings of Shaykh Nazim Al-Haqqani (1922–2014), who moved from Istanbul to Syria, while also based in his native Cyprus (cf. wiki)—this 2017 video is among many on their YouTube site:
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I’m acutely aware that outsiders like me cannot even begin to comprehend Sufi ritual. But my visit to the Naqshbandi lodge in Beylerbeyi reminded me again that (as in much Daoist and Buddhist temple ritual) the heart of ritual performance lies in The Divine Word, embodied through the pure a cappella vocal liturgy of the mosques and Sufi orders. In this case, the observance is unmediated even by percussion.
 See e.g. Elisabeth Özdalga (ed.), Naqshbandis in western and central Asia: change and continuity (1999), including Isenbike Togan’s chapter on central Asia (on which see also here). Note also the chapter on Afghanistan by Bo Utas.
For Xinjiang, note Rachel Harris, Soundscapes of music in Uyghur Islam, and (for the Istanbul connection) her recent lecture, from 42.00 (see here). I look forward to reading Ha Guangtian, The sound of salvation: voice, gender, and the Sufi mediascape in China (2022). For Uyghur Sufi bards on pilgrimage in Xinjiang, see also Ashiq: the last troubadour.