Local police chief Nausher Ahmed told AFP how an imam told a gathering at a village mosque that those who love the Prophet Mohammad always say their prayers, then asked who among the crowd had stopped praying.
Mohammad Anwar, 15, raised his hand by mistake after apparently mishearing the question.
The crowd swiftly accused him of blasphemy so he went to his house and cut off the hand he had raised, put it on a plate, and presented it to the cleric, the police chief said.
Ahmed said that he has seen a video in which the boy is greeted by villagers in the street as his parents proclaim their pride.
More From This Section
No complaint has been made, he said, so no police report has been filed and there will be no investigation.
Blasphemy is a hugely sensitive issue in Pakistan, an Islamic republic of some 200 million, where even unproven allegations frequently stir mob violence and lynchings.