Surah Al-Mujadila Verse 3 - English Translation by Ahmed Ali
Surah Al-Mujadilaوَٱلَّذِينَ يُظَٰهِرُونَ مِن نِّسَآئِهِمۡ ثُمَّ يَعُودُونَ لِمَا قَالُواْ فَتَحۡرِيرُ رَقَبَةٖ مِّن قَبۡلِ أَن يَتَمَآسَّاۚ ذَٰلِكُمۡ تُوعَظُونَ بِهِۦۚ وَٱللَّهُ بِمَا تَعۡمَلُونَ خَبِيرٞ
Those who call their wives their mothers then revoke what they had said, should free a slave before having physical contact (with them). This is to warn you, as God is aware of what you do