21:38
Al-Anbya 38
Surah Al-Anbya (الأنبياء), verse 38 — reference 21:38. Arabic text with optional translation and free audio on Al-Qalam.
وَيَقُولُونَ مَتَىٰ هَـٰذَا ٱلْوَعْدُ إِن كُنتُمْ صَـٰدِقِينَ
wayaqūlūna matā hādhā l-waʿdu in kuntum ṣādiqīna
And they say, "When is this promise, if you should be truthful?"