`A'isha, the wife of the Messenger of Allah (ﷺ) said:
I heard Allah's Messenger (ﷺ) as saying: Four are the vicious (birds, beasts and reptiles) which should be killed in the state of Ihram or otherwise: kite (and vulture), crow, rat, and the voracious dog. I (one of the narrators, `Ubaidullah b. Miqsam) said to Qasim (the other narrator who heard it from `A'isha): What about the snake? He said: Let it be killed with disgrace.