27:71
وَیَقُولُونَ مَتٰى هٰذَا الْوَعْدُ اِنْ كُنْتُمْ صَادِقٖینَ
Wayaqooloona mata hatha alwaAAdu in kuntum sadiqeena
Translations
And they say, "When is [the fulfillment of] this promise, if you should be truthful
Saheeh International
And they say: When (will) this promise (be fulfilled), if ye are truthful
Marmaduke Pickthall