[4] He received his initial training in the traditional Islamic sciences from his father, Abdul-Qadir Gilani (d. 1166), the founder of the Qadiriyya order of Sunni mysticism, prior to setting out "on his own to attend the lectures of other prominent Hanbali scholars" in his region.

[5] He is sometimes given the Arabic honorary epithet Tāj al-Dīn (Crown of the Religion) in Sunni tradition, due to his reputation as a mystic of the Hanbali school.

[6] His father Abdul Qadir Gilani[7] was regarded as a Hasani and Husayni Sayyid, i.e. his maternal and paternal ancestry included Hasan and Husayn ibn Ali, the sons of Ali, cousin of Muhammad, and Fatimah, Muhammad's daughter.

[13][14] However, Abdul Razzaq also carried the epithet, Sultan ul Faqr IV, referring to his spiritual status.

Being a Mufti of Iraq and due to his excellence as a jurist and scholar, he received the title of ‘Taj-ud-Din’ which literally means ‘the crown of religion’.

Hafiz Imad-ud-Din Ibn-e-Kathir wrote: "Hazrat Abdul Razzaq was a perfectly accomplished mystic, ascetic and pious person.

Hazrat Abu Zura'a Zahir Bin Al-Muqqadas Al-Dari was reported to have said:[19] “Today, a few such people are also present here who live across the mountain of Qa'f Qudas, their foot steps are in the air, their cloaks and the crowns of love of Allah on their heads are burning due to the extreme fire of Divine passion."

By the end of the fifteenth century the Qadiriyya had distinct branches and had spread to present-day Morocco, Spain, Turkey, India, Ethiopia, Somalia and Mali.

His method of spreading the teachings of the Sufi doctrine of Faqr was through his Punjabi couplets and through his more than written works.