Surah At-Talaq, verse 2

فَإِذَا بَلَغْنَ أَجَلَهُنَّ فَأَمْسِكُوهُنَّ بِمَعْرُوفٍ أَوْ فَارِقُوهُنَّ بِمَعْرُوفٍ وَأَشْهِدُوا۟ ذَوَىْ عَدْلٍ مِّنكُمْ وَأَقِيمُوا۟ ٱلشَّهَـٰدَةَ لِلَّهِ ۚ ذَٰلِكُمْ يُوعَظُ بِهِۦ مَن كَانَ يُؤْمِنُ بِٱللَّهِ وَٱلْيَوْمِ ٱلْـَٔاخِرِ ۚ وَمَن يَتَّقِ ٱللَّهَ يَجْعَل لَّهُۥ مَخْرَجًا ﴿٢﴾

65:2 Then when they have approached the end of their waiting period, either retain them honorably or part with them honorably. Call two just men from among yourselves as witnesses, and give true testimony for the sake of Allah. This is an exhortation for those who believe in Allah and the Last Day. Whoever fears Allah, He will make a way out for him