'Abdur-Rahman bin Abi Laila

Abdullah ibn Masud, may Allah be pleased with him, was one of the most eminent companions of the Prophet Muhammad ﷺ and the first person to recite the Quran openly in the Masjid al-Haram in Mecca, enduring the physical abuse of the Quraysh for doing so. He was a young shepherd boy who entered the Prophet's service early in the Meccan period and became one of his closest attendants. He was so frequently in the Prophet's presence that the companions sometimes assumed he was a member of his household. The Prophet named him as one of four companions from whom his followers should learn the Quran. He memorized the Quran directly from the Prophet's recitation and was considered its foremost transmitter. He was sent by Umar ibn al-Khattab to Kufa as a teacher, judge, and treasurer, and the scholars of Kufa — including the teacher of Abu Hanifah, Ibrahim al-Nakha'i — considered him their primary authority. He narrated 848 hadiths, and his legal opinions formed the nucleus around which the Hanafi school of jurisprudence later developed. He died in Medina around 32–33 AH.