Abdul Waahid Bin Zaid has been quoted in Fazail-e-Sadaqat as receiving advice from a Christian monk. He is also reported to have received education from Imam Abu Hanifah, before being initiated full-time as a Sufi by Khwaja Hasan al-Basri. 
His year of birth is unknown but is said to be on 176, 177, or 186 Hijri, equating probably to 711 AD. The month is said to be 27th of Safar. His shrine is in Basrah, Iraq.