In the Koran it is mentioned that man will be revived after death exactly as the first day he was created it is inferred that there will be definitely Resurrection:
1- Were we worn out by the first creation? Yet they are in a quandary about any fresh creation! (50:15)
2- Some day the earth will be changed into different earth, and
[so will] they will emerge for God Alone, the Irresistible! (14:48).
3- Has not man considered how we created him from a drop of semen? Yet he is an open adversary! He makes something up to be compared with us and forgets how he was created. He even says: “who will revive [our] bones once they have rotted away?” say: “the one who raised up in the first place will revive them. He is Aware of all creation.
The one who grants you fire from green trees. Notice how you kindle a fire from them. Is not whoever created Heaven and Earth Able to create the same as them?” of course [he is] he is the Creator,
the Aware. Once He wishes anything, His command only needs to tell it: “Be”! And it is! (36:78-82)