Sahih Bukhari Volume 007, Book 072, Hadith Number 768.

Narrated By Ibn 'Abbas : I offered the 'Id prayer with the Prophet and he offered prayer before the Khutba (sermon). ibn 'Abbas added: After the prayer the Prophet came towards (the rows of) the women and ordered them to give alms, and the women started putting their big and small rings in the garment of Bilal.