The sin of finding faults in others 'Abd Allah (RA) reported that the Prophet of Allah (saw) said, "A believer is not a fault-finder and is not abusive, obscene, or course." (Hadith - Bukhari's Book of Manners #313, Ahmad, Ibn Hibban, and Hakim) Ibn 'Abbas (RA) said, "If you wish to mention the faults of your friend, mention your own faults first." (Hadith - Bukhari's Book of Manners #329) http://www.inminds.co.uk/boycott-israeli-dates.php