Imam Ali Naqi (a.s.) said: A similar miracle was shown by Ali (a.s.). He had returned from the Battle of Siffeen and quenched the thirst of his companions with water, which had gushed out from a big slab of stone. He had turned it upside down, so that he could relieve himself behind it. A hypocrite from his army said: I would like to see his private parts and things getting out therefrom, because he shows to the world his closeness to the Prophet.
Then I will inform my companions of this lie. The Imam (a.s.) then ordered his man, Qambar: O Qambar! Go to the two trees over there standing at a distance of more than a Farsakh and tell them that the successor of Muhammad (S) asks you two to come close and get united. Qambar said: Sir, will my voice reach them?
Ali (a.s.) replied: One Who makes your eyesight reach the sky, which is at a distance of 500 years’ journey, will also enable your voice to reach those trees. Finally Qambar did what Ali (a.s.) had demanded and those two trees rushed towards one another so quickly as if they were two friends who meet one another after a long period of time, eager to embrace each another.
They got stuck with one another. Observing this, a group of hypocrites of his army said: Ali thinks himself (God forbid) to be like Muhammad (S) in showing magic. Neither he was a prophet nor is this one an Imam. Rather both are sorcerers. But we will go round them to observe what their private parts expel.
Almighty Allah made Ali (a.s.) aware of their dirty plans and he told Qambar in clear terms that the hypocrites have tried to cheat the legatee of the Prophet; and they imagined that he can make a barrier of only two trees and nothing more. So, go to those trees and tell them that the Wasi of the Prophet asks you to depart. So the two departed and ran away from one another like cowards running from a courageous man.
Thereafter, when Ali (a.s.) drew up his cloak to sit down and all the hypocrites became blind. They could not see anything. But when they turned their faces from that direction their eyes could see as before. But again when they tried to look at Ali (a.s.), they again became blind. This seeing and blinding occurred for several times, until Ali (a.s.) got up after relieving himself and returned to his place. This trial took place 80 times.
Finally they desired to go and see what had been thrown out by Ali (a.s.). But they could not move from their place. Their legs stuck to the ground. But when they wanted and tried to return, they could walk as usual. This also happened a hundred times. Finally all left that camp. The hypocrites gained nothing, except increase in their disobedience, disbelief and hot-headedness.