The Hellfire is produced by our organs, limbs and our inner states and emotions. The production of the rewards of paradise are also due to our organs, limbs and our inner states.
The Battle of Khaybar was already over, the Prophet (pbuh) said:
Stack all the trophies you have taken from the enemies. We would divide them among the warriors based on the divine ordinance. The trophies were divided, then the holy Prophet (pbuh) said: Beware,no trophy is remained among you. A man came forward and said: O Messenger of Allah, you stacked all the trophies and divided them. Before the division of the trophies I took a pair of bootlaces, the Messenger of Allah said: where are these pair of bootlaces?
The man said: I have put them in my pocket, the holy prophet (pbuh) said: fetch them and put them beside me, then the prophet said: if you had taken them with you, after your death, a string of fire would be tied to your foot and you would be burned until the day of resurrection.
source : erfan.ir
