They say:'If what you promise is true, when will this threat be

﴿وَيَقُولُونَ مَتَىٰ هَٰذَا ٱلۡوَعۡدُ إِن كُنتُمۡ صَٰدِقِينَ ﴾
[يُونس: 48]

They say:'If what you promise is true, when will this threat be fulfilled

﴿ويقولون متى هذا الوعد إن كنتم صادقين﴾ [يُونس: 48]

Abdel Haleem
They ask, ‘When will this promise be fulfilled, if what you say is true?’

Abdul Hye
They say: “When this promise (will be fulfilled), if you speak the truth?”

Abdullah Yusuf Ali
They say: "When will this promise come to pass,- if ye speak the truth

Abdul Majid Daryabadi
And they say: when cometh this promise, if ye say sooth

Ahmed Ali
They say: "When is this promise going to come, if what you say is true

Aisha Bewley
They say, ´When will this promise be kept if you are telling the truth?´

A. J. Arberry
They say, 'When will this promise be, if you speak truly

Ali Quli Qarai
They say, ‘When will this promise be fulfilled, should you be truthful?’