Sura 2 Al-Baqarah (The Cow), ayah 271

1. إِنْ تُبْدُوا الصَّدَقَاتِ فَنِعِمَّا هِيَ ۖ وَإِنْ تُخْفُوهَا وَتُؤْتُوهَا الْفُقَرَاءَ فَهُوَ خَيْرٌ لَكُمْ ۚ وَيُكَفِّرُ عَنْكُمْ مِنْ سَيِّئَاتِكُمْ ۗ وَاللَّهُ بِمَا تَعْمَلُونَ خَبِيرٌ

   If you disclose your charitable expenditures, they are good; but if you conceal them and give them to the poor, it is better for you, and He will remove from you some of your misdeeds (thereby). And Allah, with what you do, is (fully) Acquainted.

   2:271

Translation: Saheeh International