Abu Huraira reported God's messenger as saying, "If anyone kills a gecko with the first blow a hundred good deeds will be recorded for him, less if he kills it at the second and less still if he kills it at the third." Muslim transmitted it.
Abu Hurayrah (may Allah be pleased with him) reported that the Prophet (may Allah's peace and blessings be upon him) said: "If anyone kills a gecko with the first strike will have such-and-such reward; and anyone kills it with the second strike will have such-and-such reward, lesser than the first…
"من قتل وزغاً في أول ضربة، كتب له مائة حسنة، وفى الثانية دون ذلك، وفى الثالثة دون ذلك"
