Psalms 105:17 Kabbalah

שָׁלַ֣ח לִפְנֵיהֶ֣ם אִ֑ישׁ לְ֝עֶ֗בֶד נִמְכַּ֥ר יוֹסֵֽף׃

He sent a man before them; Joseph was sold for a servant;