לֹא־נִכְחַ֥ד עָצְמִ֗י מִ֫מֶּ֥ךָּ אֲשֶׁר־עֻשֵּׂ֥יתִי בַסֵּ֑תֶר רֻ֝קַּ֗מְתִּי בְּֽתַחְתִּיּ֥וֹת אָֽרֶץ׃
My frame was not hidden from Thee, When I was made in secret, And curiously wrought in the lowest parts of the earth.
Rashi on Psalms
in the lowest parts of the earth In the lowest compartment in my mother’s womb.