«اِلْغَرِيبْ أَعْمَى وَلَوْ كَانْ بَصِيرْ»

The saying holds that a person away from familiar ground cannot see what is around them, however sharp their eyes or mind. Without local knowledge, even a capable outsider gropes like someone without sight. The point is unfamiliarity with a place, not any lack of intelligence in outsiders.

It can be used as an excuse or as a caution. It sympathetically explains why a newcomer stumbles, and it reminds people that intelligence is no substitute for familiarity. Anyone in unfamiliar territory should therefore seek guidance rather than trust their own judgment alone.

Suitable when someone new to a town, household, or group misses things locals take for granted, such as routes, customs, or unspoken rules. It can excuse a newcomer's mistakes or warn that guidance is needed, however capable the person may be.