Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) said: Sayyiduna Ali (may Allah be pleased with him) made Sayyidah Fatimah (may Allah be pleased with her) lawful for himself in exchange for an iron coat of mail (that is, he gave it as her dowry).
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 11586