Narrated 'Abdullah bin 'Amr (Radi-Allahu 'anhu):

Narrated 'Abdullah bin 'Amr (Radi-Allahu 'anhu):

The Prophet (Sallallahu 'Alaihi Wa Sallam) said, "Whoever has (the
following) four characters will be a hypocrite, and whoever has one of the
following four characteristics will have one characteristic of hypocrisy
until he gives it up. These are:

(1) Whenever he talks, he tells a lie;
(2) whenever he makes a promise, he breaks it;
(3) whenever he makes a covenant he proves treacherous;
(4) and whenever he quarrels, he behaves impudently in an evil insulting
manner." (See Hadith No. 33 Vol. 1)

Bukhari Vol. 3 : No. 639