Complex sentence: Next morning Aman finds himself on his bed alive with no sign of any injury and presumes all that happened to be a dream but does not notice the khanda that appeared on his back, which is also carved on the tree.
Split into simpler sentences: Next morning Aman finds himself on his bed alive with no sign of any injury and presumes all that happened to be a dream. He does not notice the khanda that has appeared on his back, which is also carved on the tree.