Imam al-Sadiq (AS) said, ‘He who runs away from the battle when faced with two men from the enemy is a deserter indeed, but if he runs away from facing combat with three men, then he is not a deserter.
Al-Kāfi #48“Abu ‘Abd Allah (a.s.), would say, ‘If one, when advancing against the enemy after facing two men, flees, he is considered fleeing; however...