Hasan al-Basri

'''Abu Sa'id ibn Abi al-Hasan Yasar al-Basri, often referred to as Hasan of Basra or Hasan al-Basri''', - 15 October 728}} was an ancient Muslim preacher, ascetic, theologian, exegete, scholar, and judge.

Born in Medina in 642, Hasan belonged to the second generation of Muslims, all of whom would subsequently be referred to as the ''tābiʿūn'' in Sunni Islamic piety. He became one of "the most celebrated" of the ''tābiʿūn'', enjoying an "acclaimed scholarly career and an even more remarkable posthumous legacy in Islamic scholarship."

Hasan, revered for his austerity and support for "renunciation" (''zuhd''), preached against worldliness and materialism during the early days of the Umayyad Caliphate, with his passionate sermons casting a "deep impression on his contemporaries." His close relationships with several of the most prominent companions of Muhammad only strengthened his standing as a teacher and scholar of the Islamic sciences. The particular disciplines in which he is said to have excelled included exegesis (''tafsīr'') of the Quran, whence his "name is invariably encountered in" classical and medieval commentaries on the scripture, as well as theology. Hasan became an important figure to the later founders of Sufism with his name occurring "in many mystical ''silsilas'' (chains of teachers and their disciples) going back to Muḥammad" in the writings of Sunni mystics from the ninth-century onwards.

Scholars have said that very few of Hasan's original writings survive, with his proverbs and maxims on various subjects having been transmitted primarily through oral tradition by his numerous disciples. While fragments of his famed sermons do survive in the works of later authors, the only complete manuscripts that bear his name are apocryphal works such as the ''Risālat al-qadar ilā ʿAbd al-Malik'' (''Epistle to ʿAbd al-Malik against the Predestinarians''), a pseudopigraphical text from the ninth or early-tenth century, and another letter "of an ascetic and hortatory character" addressed to Umar II (d. 720), which is likewise deemed spurious.

Traditionally, Hasan has been commemorated as an outstanding figure by all the Sunni schools of thought, and was frequently designated as one of the well respected of the early Islamic community in later writings by such important Sunni thinkers as Abu Talib al-Makki (d. 996), Abu Nu`aym (d. 1038), Ali Hujwiri (d. 1077), Ibn al-Jawzi (d. 1201), and Attar of Nishapur (d. 1221). In his famed ''Ḳūt al-ḳulūb'', the most important work of Basran mysticism, Abu Talib al-Makki says of Hasan: "Ḥasan is our Imām in this doctrine which we represent. We walk in his footsteps and we follow his ways and from his lamp we have our light". Provided by Wikipedia