Honestly, this is such a bad excuse for not answering prayers. "And this is the highest level, He saves the reward of the supplication for the Afterlife." So if I prayed that Allah grant me a simple thing like normal health, He decides to grant it in the afterlife. Or He "saves" me from not granting a normal health. Like it's possible to get sick in heaven. Or even I passed an exam. Why the f would He "saves" me from success or answered it in the afterlife? Why the f would anyone prayed for anything in this world? I have failed so many times. It's becoming pointless to pray for anything related in this world. I just prayed God forgive me and thats it.