Witnesses

Bukhari :: Book 3 :: Volume 48 :: Hadith 821

Narrated Anas:

The Prophet was asked about the great sins He said, "They are:--

(1 ) To join others in worship with Allah,

(2) To be undutiful to one's parents.

(3) To kill a person (which Allah has forbidden to kill) (i.e. to commit the crime of murdering).

(4) And to give a false witness."