Musnad Ahmad 1304:54

'Ali ibn 'Asim narrated to us, from 'Abdullah ibn 'Uthman ibn Khuthaym, from Shahr ibn Hawshab, from Asma' bint Yazid, who said: I and my maternal aunt entered upon the Prophet, peace and blessings of Allah be upon him, and she was wearing bracelets of gold. He said to us, "Do you give their zakat?" She said: We said, "No." He said, "Do you not fear that Allah will bracelet you with bracelets of fire? Pay their zakat."