Quran 23:8 from Surah Al-Muminoon on Divine Marvels.
وَٱلَّذِينَ هُمۡ لِأَمَٰنَٰتِهِمۡ وَعَهۡدِهِمۡ رَٰعُونَ
English translation: And those who [they] of their trusts and their promise(s) (are) observers
Transliteration: wa-alladhina hum li-amanatihim wa'ahdihim ra'una