Musnad Ahmad 25:1499

'Abd al-Rahman ibn Mahdi narrated to us, Sufyan narrated to us, from 'Abd al-Rahman ibn 'Abis, who said: I heard Ibn 'Abbas saying: "I went out with the Prophet, peace and blessings of Allah be upon him, on the day of Fitr or Adha. He prayed, then he delivered a sermon, then he came to the women and exhorted them, reminded them, and commanded them to give charity."