LXX Gen 29:27

συντέλεσον οὖν τὰ ἕβδομα ταύτης, καὶ δώσω σοι καὶ ταύτην ἀντὶ τῆς ἐργασίας ἧς ἐργᾷ παρ’ ἐμοὶ ἔτι ἑπτὰ ἕτη ἕτερα.

Finish this week’s celebration, and we will give you the younger one in return for another seven years of work.”