بِسْمِ اللهِ الرَّحْمنِ الرَّحِيمِ
"If you find faults with Muslims, you will corrupt them."
"It is enough evil for a Muslim to look down upon his (Muslim) brother"
If a Muslim looks for the defects of another and hunts for his weaknesses, other Muslims will also adopt the same attitude towards him, and this situation will create dissension and conflict in society. This also will make them fall prey to sins and make them persistent in committing them. For this reason, spying and finding faults with Muslims has been prohibited by Shari'ah.