Reference for Genesis 48:14

וַיִּשְׁלַח֩ יִשְׂרָאֵ֨ל אֶת־יְמִינ֜וֹ וַיָּ֨שֶׁת עַל־רֹ֤אשׁ אֶפְרַ֙יִם֙ וְה֣וּא הַצָּעִ֔יר וְאֶת־שְׂמֹאל֖וֹ עַל־רֹ֣אשׁ מְנַשֶּׁ֑ה שִׂכֵּל֙ אֶת־יָדָ֔יו כִּ֥י מְנַשֶּׁ֖ה הַבְּכֽוֹר׃

And Israel stretched out his right hand, and laid it upon Ephraim’s head, who was the younger, and his left hand upon Manasseh’s head, guiding his hands wittingly; for Manasseh was the first-born.