וַיָּ֛שֶׁב אֶת־שַׂ֥ר הַמַּשְׁקִ֖ים עַל־מַשְׁקֵ֑הוּ וַיִּתֵּ֥ן הַכּ֖וֹס עַל־כַּ֥ף פַּרְעֹֽה׃
And he restored the chief butler back unto his butlership; and he gave the cup into Pharaoh’s hand.
Read midrashic interpretation of Genesis 40:21: and classical rabbinic exegesis.