The Prophet (saas) would explain that the only true path is that of Allah

Some people choose errant paths for themselves that are full of errors, superstition and harmful ideas and methods. These can bring them nothing but loss in this world and the next. The Prophet (saas) was always at pains to call people to the best and most beautiful path, the path of Allah, and to be a means whereby people could be saved in this world and the next.

Say: "Are we to call on something besides Allah which can neither help nor harm us, and to turn on our heels after Allah has guided us, like someone the satans have lured away in the earth, leaving him confused and stupefied, despite the fact that he has companions calling him to guidance, saying, 'Come with us'!" Say: "Allah's guidance, that is true guidance. We are commanded to submit as Muslims to the Lord of all the worlds." (Surat al-An'am: 71)

The Prophet (saas) has stated in the hadiths that the right path is that of Allah and His Prophet (saas):
"The best word is the Word of Allah and the best guidance is the guidance of Muhammad."36