It is narrated from Sayyiduna Mukhnif bin Qais (may Allah be pleased with him), he says: We were with the Messenger of Allah (peace and blessings be upon him) when he was standing at Arafat. The Messenger of Allah (peace and blessings be upon him) said: O people! Every year, sacrifice (Qurbani) and ‘Atirah are obligatory upon every household. Then the Messenger of Allah (peace and blessings be upon him) asked: Do you know what ‘Atirah is? Ibn ‘Aun, the narrator, says: I do not know what answer the people gave to this question. Then the Messenger of Allah (peace and blessings be upon him) said: It is the same which people call Rajabiyyah.