The book for guidance: Ethics (adab) and Spiritual Journey (Suluk) in three Sufi textbooks from the Ottoman era (Al-Sayr wa-l-suluk by Qasim al-Khani, 1697, Tuhfat al-salikin by Muhammad al-Samanudi 1785 and Tuhfat al-ikhwan by Ahmad al-Dardir, 1786)
