36:48
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?"
— Saheeh International
And they say, ‘When will this promise be fulfilled, if what you say is true?’
— M. A. S. Abdel Haleem
And they say: "When will this promise (i.e. Resurrection) be fulfilled, if you are truthful?"
— Muhammad Muhsin Khan & Muhammad Taqi-ud-Din al-Hilali