Sayyiduna Ali (may Allah be pleased with him) narrates from the Prophet (peace and blessings be upon him) that he (peace and blessings be upon him) commanded Sayyidah Fatimah (may Allah be pleased with her): "Weigh the hair of Husayn (may Allah be pleased with him) and give in charity silver equal to its weight, and give the midwife a leg of the aqiqah animal."
(b) Sayyiduna Ali (may Allah be pleased with him) gave the midwife a leg of the aqiqah animal.
(c) Ja'far bin Muhammad narrates from his father, in a mursal narration, that they should send a leg of the aqiqah animal to the midwife.
(d) Muhammad bin Ali bin Husayn narrates from Sayyiduna Ali (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) performed the aqiqah for Hasan (may Allah be pleased with him) with one goat and said: "O Fatimah, shave his head and give in charity silver equal to the weight of his hair." The weight of the hair was one dirham and part of a dirham.
This too is munqati' (broken); and in his narration it has also been said: from Muhammad bin Ali bin Husayn, from his father, from his grandfather, from Ali (may Allah be pleased with him), and I do not know whether it is preserved or not.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19298