ANSWER:

The hadith is authentic. Muslims believe what the prophet salla allahu alaihi wa sallam had said. Applying your logic to what the prophet salla allahu alaihi wa sallam had said and contemplating to reject it is like satan when he refused to prostrate to Adam because he believed that he is better than him as he was created from fire and Adam was created from clay. 

The hadith about the salamanders(house lizards) goes like when prophet ibrahim (pbuh) was thrown into the fire by his people then every animals made by allah (SWT) tried their best to wipe off the fire but the salamander did the opposite of it,it blowed air into the fire to fuel it up that is why we muslims are suppose to kill salamanders but lizards doesn’t have a free will except humans and jin?

Commentary on Hadeeth |