573 — Ubayd Allah ibn Ahmad informed us: Al-Husayn ibn Isma'il informed us. He said: Sa'id ibn Muhammad ibn Thawab narrated to us. He said: Abu Asim narrated to us. He said: Ibn Jurayj narrated to us, from Sulayman ibn Musa, who said: I heard Salim narrating from his father that the Prophet, peace and blessings be upon him, said: “No one shall touch the Quran except one who is pure.”