Reddit mentions of The Sufi Orders in Islam

There is a history of hermetic seclusion in Islam, though it is perhaps a non-normative or even antinomian practice. Look for information on the life of Abu Hamid al-Ghazali (450-505 AH/1058-1111 AD). You can read various English translations of his books al-Munqidh min al-ḍalal (Deliverance from Error) as well as Kimiya-ye saʿadah (Alchemy of Happiness) (really a Persian abridgment of the former title). In these books he discusses his reasons for withdrawing from society, giving up his job as a teacher at al-Madrasa al-Nizamiyya of Baghdad, leaving his family and the results thereof.

There is also a Sufi tariqa called the Khalwatiyya (Havetiyye in Turkey) who practice a ritual seclusion. There is one book on them called The Transformation of Muslim Mystical Thought in the Ottoman Empire: The Rise of the Halvetî Order, 1350-1650 by John J. Curry (Edinburgh University Press, 2010). It is really expensive though. You might be able to find it in a nearby university library if they have a Religious Studies, Comparative Religion, Middle-East or Islamic Studies department on campus. J. Spencer Trimingham wrote a book called The Sufi Orders in Islam (Oxford University Press, 2nd ed., 1998) that has a relatively extensive discussion of the Khalwatiyya and their sub-branchings as well. That one is a bit less expensive too, and probably easier to find at university libraries. You might even be able to request that your local library acquire it.