﴿ فَإِذَا بَلَغْنَ أَجَلَهُنَّ فَأَمْسِكُوهُنَّ بِمَعْرُوفٍ أَوْ فَارِقُوهُنَّ بِمَعْرُوفٍۢ وَأَشْهِدُوا۟ ذَوَىْ عَدْلٍۢ مِّنكُمْ وَأَقِيمُوا۟ ٱلشَّهَٰدَةَ لِلَّهِ ۚ ذَٰلِكُمْ يُوعَظُ بِهِۦ مَن كَانَ يُؤْمِنُ بِٱللَّهِ وَٱلْيَوْمِ ٱلْءَاخِرِ ۚ وَمَن يَتَّقِ ٱللَّهَ يَجْعَل لَّهُۥ مَخْرَجًۭا ﴾

“And so, when they are about to reach the end of their waiting-term, either retain them in a fair manner or part with them in a fair manner. And let two persons of [known] probity from among your own community witness [what you have decided]; and do yourselves bear true witness before God: thus are admonished all who believe in God and the Last Day. And unto everyone who is conscious of God, He [always] grants a way out [of unhappiness],”

Please check ayah 65:3 for complete tafsir.