Musannaf Ibn Abi Shayba 5:8

Ibn Numayr narrated to us, from al-A’mash, from Shaqiq, from ‘Amr ibn al-Harith, from Zaynab, the wife of ‘Abdullah, who said: The Messenger of Allah (may Allah bless him and grant him peace) commanded us to give charity. He said: "Give charity, O assembly of women."