Surah Al-Baqarah 2:27

ٱلَّذِينَ يَنقُضُونَ عَهْدَ ٱللَّهِ مِنۢ بَعْدِ مِيثَـٰقِهِۦ وَيَقْطَعُونَ مَآ أَمَرَ ٱللَّهُ بِهِۦٓ أَن يُوصَلَ وَيُفْسِدُونَ فِى ٱلْأَرْضِ ۚ أُو۟لَـٰٓئِكَ هُمُ ٱلْخَـٰسِرُونَ

Who break the covenant of Allāh after contracting it and sever that which Allāh has ordered to be joined and cause corruption on earth. It is those who are the losers.

Translation: Saheeh International

Tafsir

Those such as He has described break the covenant of God the contract He made with them in the revealed Books to belief in Muhammad (s) after its solemn binding after it has been confirmed with them and such as cut what God has commanded should be joined of belief in the Prophet of kinship and other matters an in the …

Excerpt from Tafsir al-Jalalayn, commentary on 2:27, via Quran.com. The reader has the full commentary and 9 more tafsirs.