Dhu al-Nun al-Misri

Dhu al-Nun al-Misri was born in Akhmim (Ikhmim), Upper Egypt. Modern critical reference works commonly place his birth around 155 AH/772 CE, while some later literature gives dates nearer 180 AH/796 CE; the early chronology is therefore not completely uniform. His personal name is most often given as Thawban ibn Ibrahim, although classical biographical literature preserves other forms, especially Fayḍ ibn Ahmad or Fayḍ ibn Ibrahim. His father is named as Ibrahim in an early Egyptian report preserved by Ibn al-Jawzi, and Dhu al-Nun is described as being of Nubian origin. The same report records three brothers: Dhu al-Kifl, al-Humaysa' and Abd al-Bari.

He travelled widely, with Syria, Mecca and Yemen among the places associated with his journeys. Sources connect him with hadith transmission from Malik ibn Anas, Sufyan ibn Uyayna, al-Layth ibn Sa'd, Fudayl ibn Iyad and others, although hadith critics differed in their assessments of reports transmitted through him. Al-Daraqutni is reported as judging his hadith sound when the chain to Dhu al-Nun is itself sound, while other critics regarded him as weak or as not highly precise in hadith transmission. These evaluations concern hadith reliability and should not be confused with his historical importance as an ascetic teacher.

In the history of Islamic spirituality, Dhu al-Nun became especially associated with discourse on ma'rifa (experiential knowledge of God), tawba (repentance), spiritual states, the ranks of the awliya, sincerity, reliance upon God, love, longing and disciplined detachment. Later authors often credit him with helping systematize the language of spiritual states and stations in Egypt. Abu Nu'aym devoted an extensive section of Hilyat al-Awliya to his prayers, sayings, journeys and ascetic narratives, while al-Sulami, al-Qushayri, al-Hujwiri and later Sufi biographers made him a major figure in the remembered genealogy of early Sufism.

His public teaching also produced controversy. A modern scholarly synthesis reports criticism from Egyptian Maliki jurists over unfamiliar mystical formulations and opposition from Mu'tazili circles because of his position that the Qur'an was uncreated. He was eventually taken to the Abbasid court during the reign of al-Mutawakkil, where accounts say the caliph was impressed by his speech and permitted his return to Egypt. The chronology of this summons is usually placed in the 240s AH.

Dhu al-Nun was also associated in later literature with alchemy, medicine, talismanic sciences and the interpretation of ancient Egyptian scripts. Several alchemical and wisdom texts survive under his name, including works or manuscript pieces on the 'noble art', elixir properties and the philosopher's stone. Attribution of every such text directly to the historical Dhu al-Nun cannot be assumed; some may reflect later intellectual reception under his famous name. Likewise, the celebrated story explaining the title 'Dhu al-Nun' through fish bringing jewels is explicitly treated differently by sources: Attar links the miracle to him, while al-Qushayri transmits a similar episode about another person. It is therefore best classified as hagiographic tradition, not secure biography.

He died in Egypt, with 245 AH/859 CE the strongest and most frequently accepted date, although 246 AH and 248 AH also appear in the tradition. One detailed report places his death at Giza, his body being carried by boat across to Fustat because of the crowd, and his burial beside the cemetery of the Ma'afir. A present tomb/maqam attributed to him is visited in the al-Qarafa/al-Muqattam cemetery zone of Cairo near the shrine complexes of al-Layth ibn Sa'd and Uqba ibn Amir.