Quran 64:17 from Surah At-Taghaabun on Divine Marvels.
إِن تُقۡرِضُواْ ٱللَّهَ قَرۡضًا حَسَنٗا يُضَٰعِفۡهُ لَكُمۡ وَيَغۡفِرۡ لَكُمۡۚ وَٱللَّهُ شَكُورٌ حَلِيمٌ
English translation: If you loan (to) Allah a loan goodly He will multiply it for you and will forgive you And Allah (is) Most Appreciative Most Forbearing
Transliteration: in tuq'ridu al-laha qardan hasanan yuda'if'hu lakum wayaghfir lakum wal-lahu shakurun halimun