Contrary to the claim of the person who says that by killing them, and by killing each one of them, the prayer becomes invalid.

It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) commanded to kill two black things—the scorpion and the snake—during prayer. In the hadith of Janab Ghundar, Mu'ammar says: I asked him about the two black things, so he replied: the scorpion and the snake. And in the hadith of Janab Abdul A'la, Yahya says: that is, what is meant are the snake and the scorpion.