Ammar (may Allah have mercy on him) narrates: Some slaves of Ibn Zubair were in the state of Ihram. Once, a monitor lizard passed by them. They struck it with sticks and killed it. Then they became confused about this matter. They went to the service of Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) and mentioned this to him. So Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) said: A sacrifice of a ram will be obligatory upon you. They asked: Will the sacrifice of a ram be obligatory upon each one of us? Abdullah bin Umar (may Allah be pleased with them both) replied: You are being excessive upon yourselves; a sacrifice of one ram will be obligatory upon all of you. The experts of language have said: In the wording of the narration "lima'zarabikum," it means that in this case, you would be being excessive with yourselves.