Parallel
Genesis 21:8
Swete's Septuagint · Berean Standard Bible
Καὶ ηὐξήθη τὸ παιδίον καὶ ἀρεγαλακτίσθη καὶ ἐποίησεν Ἀβραὰμ δοχὴν μεγάλην ᾗ ἡμέρᾳ ἀπεγαλακτίσθη Ἰσαὰκ ὁ υἱὸς αὐτοῦ.
So the child grew and was weaned, and Abraham held a great feast on the day Isaac was weaned.