In A.H. 488, at the age of eighteen, he left his native province to become a student in the great capital city of Baghdaad, the hub of political, commercial and cultural activity, and the center of religious learning in the world of Islaam.  After studying traditional sciences under such teachers as the prominent Hanbalii jurist [faqiih], Abuu Sa'd 'Alii al-Mukharrimii, he encountered a more spiritually oriented instructor in the saintly person of Abu'l-Khair Hammaad ad-Dabbaas.

Then, instead of embarking on his own professorial career, he abandoned the city and spent twenty-five years as a wanderer in the desert regions of 'Iraaq.  He was over fifty years old by the time he returned to Baghdaad, in A.H. 521/1127 C.E., and began to preach in public.  His hearers were profoundly affected by the style and content of his lectures, and his reputation grew and spread through all sections of society.  He moved into the school [madrasa] belonging to his old teacher al-Mukharrimii, but the premises eventually proved inadequate.

In A.H. 528, pious donations were applied to the construction of a residence and guesthouse [ribaat], capable of housing the Shaikh and his large family, as well as providing accommodation for his pupils and space for those who came from far and wide to attend his regular sessions [majaalis]. 

He lived to a ripe old age, and continued his work until his very last breath, as we know from the accounts of his final moments recorded in the Addendum to Revelations of the Unseen.

In the words of Shaikh Muzaffer Ozak Efendi:  "The venerable 'Abd al-Qadir al-Jilani passed on to the Realm of Divine Beauty in A.H. 561/1166 C.E., and his blessed mausoleum in Baghdaad is still a place of pious visitation.  He is noted for his extraordinary spiritual experiences and exploits, as well as his memorable sayings and wise teachings.  It is rightly said of him that 'he was born in love, grew in perfection, and met his Lord in the perfection of love.'  May the All-Glorious Lord bring us in contact with his lofty spiritual influence!"