Where do we draw the line with reference to treatment of non muslims?

>Hammam b. Munabbih reported: > >That is what Abu Huraira reported to us from the Messenger of Allah (ﷺ) and he narrated (some) ahadith one of which is that the Messenger of Allah (ﷺ) said: I have been helped by terror (in the hearts of enemies) and **I have been given words which are concise but comprehensive in meaning**. ([Sahih Muslim 523f](https://sunnah.com/muslim:523f)) How can we understand this Prophetic statement? How can we determine what is valid or invalid meaning? If the Qur'an and ahadith are comprehensive in meaning then where do we draw the line? I've seen many interpretations that people fall into confusion on which is true or false, exegesis or eisegesis, orthodoxy or heresy. I need help.