Quran 2:271 from Surah Al-Baqara on Divine Marvels.
إِن تُبۡدُواْ ٱلصَّدَقَٰتِ فَنِعِمَّا هِيَۖ وَإِن تُخۡفُوهَا وَتُؤۡتُوهَا ٱلۡفُقَرَآءَ فَهُوَ خَيۡرٞ لَّكُمۡۚ وَيُكَفِّرُ عَنكُم مِّن سَيِّـَٔاتِكُمۡۗ وَٱللَّهُ بِمَا تَعۡمَلُونَ خَبِيرٞ
English translation: If you disclose the charities then well it (is) But if you keep it secret and give it (to) the poor then it (is) better for you And He will remove from you [of] your evil deeds And Allah with what you do (is) All-Aware
Transliteration: in tub'du al-sadaqati fani'imma hiya wa-in tukh'fuha watu'tuha al-fuqaraa fahuwa khayrun lakum wayukaffiru ankum min sayyiatikum wal-lahu bima ta'maluna khabirun