Sahih Al Bukhari (645)

عن أنس (رضي الله عنه) قال {سئل النبي (صلى الله عليه وسلم) عن الكبائر قال الإشراك بالله وعقوق الوالدين وقتل النفس وشهادة الزور}

Anas narrated: The Prophet (peace be upon him) 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."