Help meee!

Because we're always asked a question through e-mail, we wanted to get the best answer. The best way would be to let our community answer it since we want it to be a collective response. Besides, that's what we are, right? Muslims in England! Please submit your answer below at the comments section. This week's question: 

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Hey,

This question is about grave or punishments. Allah says in the Quran: "They will wake up and say we had a very long sleep (The Death)". Now, if they feel like they had a very long sleep, how can they be punished then in the graves? Please clarify this for me!

Bye

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Abdullah Ahmed, Nelson.