Chapter on Etiquettes of Causes Requiring Purification

Narrated to me by the Shaykh (Al-Mufid), may Allah سبحانه وتعالى support him, who said: Abu Al-Qasim Ja'far bin Muhammad narrated to me, from Muhammad bin Ya'qub, from Ahmad bin Idris, from Muhammad bin Ahmad, from Ahmad bin Al-Hasan bin Ali, from Amr bin Sa'id, from Musaddiq bin Sadaqah, from Ammar Al-Sabati, from Abu Abdullah عليه السلام, who said: I asked Imam عليه السلام about a man who wants to perform istinja (cleansing); which should he begin with - the anus or the penis? Imam عليه السلام said: 'With the anus, then the penis.'