Yā-Sīn - 48

﴿وَيَقُولُونَ مَتَىٰ هَٰذَا الْوَعْدُ إِنْ كُنْتُمْ صَادِقِينَ﴾

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48. And they say: "When will this promise (i.e. Resurrection) be fulfilled, if you are truthful?"