וַיִּקְרָ֥א יוֹסֵ֛ף אֶת־שֵׁ֥ם הַבְּכ֖וֹר מְנַשֶּׁ֑ה כִּֽי־נַשַּׁ֤נִי אֱלֹהִים֙ אֶת־כָּל־עֲמָלִ֔י וְאֵ֖ת כָּל־בֵּ֥ית אָבִֽי׃
And Joseph called the name of the first-born Manasseh: ‘for God hath made me forget all my toil, and all my father’s house.’
Read Kabbalistic (mystical) interpretations of Genesis 41:51: Zohar and classical Jewish mystical sources, free online.