مَنْ حَمَلَ عَلَيْنَا السِّلَاحَ، فَلَيْسَ مِنَّا
Whoever raises arms against us is not following our way.
Source: البخاري
In حَمَلَ عَلَيْنَا السِّلَاحَ, حَمَلَ is a past-tense verb, السِّلَاحَ its object (“weapon”), and عَلَيْنَا means “against us.” فَلَيْسَ مِنَّا conveys severe disapproval; it is not a shortcut for judging the individual religious status of every person involved.
Using weapons to frighten people, disturb public peace, or commit unlawful violence undermines their safety. The beginner-level lesson is the protection of life and communal security. In a dangerous situation, seeking safe and lawful assistance is preferable to initiating armed confrontation.