‏السلام : Hadeeth No:5566 Abu Huraira reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying (that he who kills a gecko) with the first stroke there are seventy rewards for him....

‏الجهاد والسير‏ : Hadeeth No:4459 This hadith has been narrated on the authority of Yazid b. Hurmuz through another chain of transmitters....