Answer:

1. They will ask you about the Hour: when is it due? Say: ‘Knowledge of it rests with my Lord alone. He alone will reveal it at its proper time. It hangs heavy in the heavens and the earth. It will not come upon you except suddenly.’ They will ask you as if you had full knowledge of it. Say: ‘Knowledge of it rests with Allah alone. But most people do not know that.’ (Qur’an, 7:187)
2. People will ask you about the Last Hour. Say: ‘Only Allah has knowledge of it. What will make you understand? It may be that the Last Hour is very near.’ (Qur’an, 33:63)
3. They ask you about the Hour: ‘When will it come?’ What are you doing mentioning it? Its coming is your Lord’s affair. (Qur’an, 79:42-44)
4. They say, ‘When will this promise come about if you are telling the truth?’ Say: ‘The knowledge is with Allah alone and I am only a clear warner.’ (Qur’an, 67:25-26)