Translation:

28. They say: "When will this decision be if ye are telling the truth?"

Notes (Tafseer)

3664. The Unbelievers may say: "If all this which you say is true, tell us when this final decision between right and wrong will come about." The answer is: "If you mean that you will postpone your repentance and reform till then, it will be no use: it will be too late for repentance, and no respite will be granted then: this is the Respite, and this is your chance."