It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that when Sayyiduna Ali (may Allah be pleased with him) wished to go in to Sayyidah Fatimah (may Allah be pleased with her) (for the consummation of the marriage), the people said: "Bring something." He said: "I do not have anything." The Prophet (peace and blessings be upon him) said: "Where is your Hutamiyyah coat of mail?"
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 11916