English translation
754. Al-Ḥakam bin Al-A'rfaṣaj said: "I met up with Ibn 'Abbās while he was reclining on his Ridā' at the Zamzam (well). So I said: 'Inform me about the Day of 'Āshūrā', on which day is it fasted?' He said: 'When you see the crescent of Al-Muḥarram, then count, then fast on the morning of the ninth day.'" He said: 'I said: Is this how Muḥammad ﷺ fasted it?' He said: 'Yes.'" (Ṣaḥīḥ)
