Sahih Muslim 1030
Sahih Muslim · Book 12: The Book of Zakat · Encouragement to give in charity even if it is a little, and a little should not be withheld because one thinks it is too little
Abu Huraira reported Allah's Messenger (ﷺ) as saying:
حَدَّثَنَا يَحْيَى بْنُ يَحْيَى ، أَخْبَرَنَا اللَّيْثُ بْنُ سَعْدٍ ، ح وَحَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ ، حَدَّثَنَا اللَّيْثُ ، عَنْ سَعِيدِ بْنِ أَبِي سَعِيدٍ ، عَنْ أَبِيهِ ، عَنْ أَبِي هُرَيْرَةَ ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم كَانَ يَقُولُ " يَا نِسَاءَ الْمُسْلِمَاتِ لاَ تَحْقِرَنَّ جَارَةٌ لِجَارَتِهَا وَلَوْ فِرْسِنَ شَاةٍ " .
O Muslim women, none of you should consider even a sheep's trotter too insignificant to give to her neighbour.