Musannaf Ibn Abi Shaybah 4491 — Those who said: if he doubts and does

Abu Mijlaz said: While stoning the Jamarat I could not remember how many pebbles I had thrown. So I asked Sayyiduna Ibn Umar (may Allah be pleased with them both) about it, but he gave me no answer. Just then Ibn al-Hanafiyyah passed by; I asked him, and he said, "O servant of Allah, do the stoning again. With us nothing is greater than the prayer, and when one of us forgets in the prayer, he repeats it." I mentioned this to Sayyiduna Ibn Umar (may Allah be pleased with them both), and he said, "They are the Ahl al-Bayt (the Prophet's household), and they have greater understanding."