660 — Muhammad ibn Idrīs narrated to me: Asbagh narrated to us: Ibn Wahb informed me: Sa‘īd ibn Abī Ayyūb narrated to me, from Qays ibn Hajjāj, from Hanash al-San‘ānī, who said: “No one has ever been foul-mouthed unless he was conceived either through intercourse during menstruation or through fornication.”