Khwaja Muhammad Arif Riwgari is the first of the group of Central Asian Sufi teachers known simply as Khajagan (the Masters) of the Naqshbandi Order.
When Abdul Khaliq Ghajadwani died, his first deputy Khwāja Ahmad Siddīq succeeded him and took over the seat of spiritual directorship and trained the seekers in this noble path.
Arif Riwgari wrote a treatise on tasawwuf, called Ārif Nāma, and one of its manuscripts is located in the library of Khāniqāh Mūsā Zaī, district Dera Ismail Khan, Pakistan.
At the end of his times, Arif Riwgari appointed Mahmud Anjir Faghnawi as his deputy and all his companions associated themselves with Mahmūd Faghnawī following his death.
He was buried in his hometown Riwgar (Shafirkon, Bukhara, Uzbekistan), where his noble tomb is a place of blessings and is visited by many.