Quran 23:13 from Surah Al-Muminoon on Divine Marvels.
ثُمَّ جَعَلۡنَٰهُ نُطۡفَةٗ فِي قَرَارٖ مَّكِينٖ
English translation: Then We placed him (as) a semen-drop in a resting place firm
Transliteration: thumma ja'alnahu nut'fatan fi qararin makinin