Al Mujadilah, 3 Ayah
58:3
وَٱلَّذِينَ يُظَٰهِرُونَ مِن نِّسَآئِهِمۡ ثُمَّ يَعُودُونَ لِمَا قَالُواْ فَتَحۡرِيرُ رَقَبَةٖ مِّن قَبۡلِ أَن يَتَمَآسَّاۚ ذَٰلِكُمۡ تُوعَظُونَ بِهِۦۚ وَٱللَّهُ بِمَا تَعۡمَلُونَ خَبِيرٞ ٣
Wa Al-Ladhīna Yužāhirūna Min Nisā'ihim Thumma Ya`ūdūna Limā Qālū Fataĥrīru Raqabatin Min Qabli 'An ۚ Yatamāssā Dhālikum Tū`ažūna ۚ Bihi Wa Allāhu Bimā Ta`malūna Khabīrun
And those who pronounce thihar from their wives and then [wish to] go back on what they said - then [there must be] the freeing of a slave before they touch one another. That is what you are admonished thereby; and Allah is Acquainted with what you do.