Musnad Ahmad 366:0

Narrated to us by Yahya ibn Sa’id, from Hisham, who said: My father informed me, from the daughter of Abu al-Hakam al-Ghifari, that she heard the Messenger of Allah (ﷺ) say: "O women of the believers, let not any neighbor consider even a sheep’s trotter too insignificant to give to her neighbor."