Ja'far bin Sa'id narrated from his father, Sa'id bin Ubaydullah al-Kahili, that when Sayyiduna Ali (may Allah be pleased with him) proposed to Sayyidah Fatimah (may Allah be pleased with her), the Messenger of Allah (peace and blessings be upon him) said: "Do you have a dowry?" I said: I have my mount and my coat of mail. He said: I sold them both for four hundred. And he (peace and blessings be upon him) said: "Get plenty of perfume for Fatimah, for she too is a woman among women."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصداق / 14471