Musnad Abi Ya'la 353 — he said: I asked the Prophet ﷺ for the hand

It is narrated from Sayyiduna Ali bin Abi Talib (may Allah be pleased with him) that he said: "I asked the Prophet (peace and blessings be upon him) for the hand of his daughter Sayyidah Fatimah (may Allah be pleased with her) in marriage, whereupon Sayyiduna Ali (may Allah be pleased with him) sold a coat of armour of his and some of his other belongings, and the price reached four hundred and eighty dirhams. The Prophet (peace and blessings be upon him) instructed that two thirds of this sum be set aside for perfume and one third for clothing. He (peace and blessings be upon him) also rinsed his mouth into a vessel of water and ordered the two of them (Ali and Fatimah, may Allah be pleased with them both) to bathe with that water. He (peace and blessings be upon him) had also urged Sayyidah Fatimah (may Allah be pleased with her) not to go ahead of him (peace and blessings be upon him) in suckling her child, but she went ahead of him (peace and blessings be upon him) in suckling Sayyiduna Husayn (may Allah be pleased with him). As for Sayyiduna Hasan (may Allah be pleased with him), it is narrated that the Prophet (peace and blessings be upon him) put something into his blessed mouth (his own saliva) whose reality we do not know, and so he was the more knowledgeable of the two."