In 1911 Ali founded Majelis Taklim Kwitang (the activity of congregation in Majelis Taklim is mostly listening to sermon given by the preacher) on Kwitang II street.
A number of other Betawi scholars who had studied to him and some even open other Majelis Taklim were Thahir Rohili (the founder of al-Thahiriyyah), Abdullah Syafi'i (the founder of Assyafi'iyyah), Fathullah Harun (later migrated to Malaysia), Abdulrazak Mamun and Zayadi [REF].