Question:
Should non-venomous snakes be killed, or should they be left alone?
Answer:
In the hadith literature, there are narrations that speak about killing snakes. In Sahih al‑Bukhari (Hadith 3297), the Prophetﷺinstructed: “Kill the snakes.”
But when we look more carefully at the narrations, we see that the instruction was later clarified. The Prophetﷺspecifically mentioned two types of snakes that should be killed. One was the snake that has two white stripes along its body. The other was a short-tailed snake. These two were singled out because they were known to be especially dangerous.
Why were these particular snakes mentioned?
Because they were believed to cause serious harm. Reports mention that these snakes could cause blindness, and they were feared to cause miscarriage in pregnant women. In other words, the reason for killing them was the harm they posed to human life and safety.
In Arabia at that time, those species were considered particularly dangerous. So, the command was not a blanket instruction to kill every snake without distinction. Rather, it was directed toward snakes that posed real danger.
From this, scholars derive an important principle: if an animal causes serious harm — such as death, blindness, or severe danger — then it is permissible to kill it in order to protect human life.
Now consider our situation today, for example in places like Tamil Nadu. Most people cannot easily identify all snake species. But we do know that some snakes, such as cobras and certain other venomous snakes, can be deadly within a short time.
So how should a person act?
If you are able to clearly distinguish between a venomous snake and a harmless one, then the harmless snake should be spared. There is no need to kill it.
But if you cannot distinguish the species, and the snake appears in a place where it may endanger you or your family, then removing that danger becomes the priority. Your life and the safety of your family take precedence over the life of the snake. If there is doubt about whether the snake is venomous, it is permissible to remove that doubt by eliminating the threat.
However, if you clearly know that it is a harmless snake — such as a water snake that poses no danger — then it should simply be left alone.