Sahih Bukhari
Witnesses
Volume: 003 / Book Number: 048 / Hadith Number: 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."