﴿ إِنَّ ٱلْمُصَّدِّقِينَ وَٱلْمُصَّدِّقَٰتِ وَأَقْرَضُوا۟ ٱللَّهَ قَرْضًا حَسَنًۭا يُضَٰعَفُ لَهُمْ وَلَهُمْ أَجْرٌۭ كَرِيمٌۭ ﴾

“Verily, as for the men and women who accept the truth as true and who [thus] offer up unto God a goodly loan, they will be amply repaid, and shall have a noble reward [in the life to come].”

Please check ayah 57:19 for complete tafsir.