Surah Ar-Ra'd 13:20

ٱلَّذِينَ يُوفُونَ بِعَهْدِ ٱللَّهِ وَلَا يَنقُضُونَ ٱلْمِيثَـٰقَ

Those who fulfill the covenant of Allāh and do not break the contract,

Translation: Saheeh International

Tafsir

such as fulfil God’s covenant meaning the one that was taken from them while they were still atoms — or meaning any covenant — and do not break the pact by abandoning belief or religious obligations;

Excerpt from Tafsir al-Jalalayn, commentary on 13:20, via Quran.com. The reader has the full commentary and 9 more tafsirs.