en_tn_lite_do_not_use/gen/39/03.md

His master saw that Yahweh was with him

This means that the master saw how Yahweh was helping Joseph. AT: "His master saw that Yahweh was helping him" (See: rc://en/ta/man/translate/figs-idiom)

that Yahweh prospered everything that he did

"Yahweh caused everything that Joseph did to prosper"