Where does “كافأ” come from?

كافأ (Arabic) comes from Arabic ف, from Arabic نَفِدَ — to run out, to give out.

كافأ (Arabic): to reward

Definitions

Step	Language	Word	Meaning
1	Arabic	ف	then, and then; and so, thus, hence, therefore;...
2	Arabic	نَفِدَ	to run out, to give out

كافأ — Etymology, Origin & Word History | Etymology Explorer