I Samuel 30:11 Midrash

וַֽיִּמְצְא֤וּ אִישׁ־מִצְרִי֙ בַּשָּׂדֶ֔ה וַיִּקְח֥וּ אֹת֖וֹ אֶל־דָּוִ֑ד וַיִּתְּנוּ־ל֥וֹ לֶ֙חֶם֙ וַיֹּ֔אכַל וַיַּשְׁקֻ֖הוּ מָֽיִם׃

And they found an Egyptian in the field, and brought him to David, and gave him bread, and he did eat; and they gave him water to drink;