Chapter 16: The Book of Pilgrimage
' 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.
Sahih Muslim 1198a