Purification of the Heart -text
Fantasizing and Finding faults
what is Forbidden to do (Action) is Forbidden to Think about or fanaticising about, for example a beauty women that is not your wife. Also to think about faults of Muslims and their shortcomings is forbidden. From Tradition To busy yourself with your our faults rather then others will earn you a special Tree in Heaven.
Tradition “A believer is not a fault-finder and is not abusive, obscene, or course." “If you wish to mention the faults of your friend, mention your own faults first” if your brother does something you don't like, you should find seventy excuses for him. Seventy! Before you run out of good reasons to give him and start blaming him.
if your brother does something you don't like, you should find seventy excuses for him. Seventy! Before you run out of good reasons to give him and start blaming him.' Whoever covers the faults of a believer, Allah will cover his faults on the Day of Arising'. So consider the situation carefully and heed the call of Allah, ?Let them pardon and forgive. Do you not wish that Allah should forgive you? Allah is most Forgiving, most Merciful.? (Qur?an: 24: 22).
Tradition “If you love someone, do not quarrel with him and do not annoy him. Do not ask others about him, for the one you ask might be his enemy and thus tell you things about him that are not true and thus break you apart.”