Surah Al-Mu'minun 23:13

ثُمَّ جَعَلْنَـٰهُ نُطْفَةً فِى قَرَارٍ مَّكِينٍ

Then We placed him as a sperm-drop in a firm lodging [i.e., the womb].

Translation: Saheeh International

Tafsir

Then We made him namely man the progeny of Adam a drop a sperm-drop in a secure lodging which is the womb.

Excerpt from Tafsir al-Jalalayn, commentary on 23:13, via Quran.com. The reader has the full commentary and 9 more tafsirs.