Tajassus in Islam: Definition, Ruling, Evidence, Everyday Examples, and Its Dangers
Tajassus is the act of snooping around for someone else's flaws, mistakes, or private matters. This is strictly forbidden in Islam and considered a major sin because it can wreck relationships between people. But scholars do allow tajassus in emergencies, like investigating criminals or spying on enemies during war for the safety of the Muslim community.
The prohibition of tajassus is spelled out in the Quran, for instance in Surah Al-Hujurat verse 12 which bans looking for others' faults, and Surah Al-Isra verse 36 about not following something without knowledge. Prophet Muhammad (peace be upon him) also forbade tajassus in a hadith narrated by Bukhari, and he warned that whoever digs up their brother's shame, Allah will expose their own (narrated by Tirmidhi).
Everyday examples of tajassus include spying on someone's daily life, secretly checking your partner's phone, eavesdropping on conversations, hunting for dirt on social media, reading other people's messages without permission, and doxing. This kind of behavior is dangerous because it can destroy brotherhood, open the door to gossip and slander, cause hostility, and ruin your own faith.
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