﴿ وَيَقُولُونَ مَتَىٰ هَٰذَا ٱلْوَعْدُ إِن كُنتُمْ صَٰدِقِينَ ﴾

“But they [only] ask, "When is this promise to be fulfilled? [Answer this, O you who believe in it,] if you are men of truth!"”

(And they) i.e. the disbelievers of Mecca (say: When (will) this promise) which you promised us ((be fulfilled), if ye are truthful) it will ever be fulfilled?