The Star - 53:28 They have no knowledge in this matter, they follow only conjecture, and conjecture is no substitute for truth.
The end of blindly following ancestors without questioning them:
Those Who Set The Ranks/37:68 Then their return is to Hell.
Those Who Set The Ranks/37:69 They found their forefathers astray.
Those Who Set The Ranks/37:70 And they were blindly following in their footsteps.
Those Who Set The Ranks/37:71 Many before them had gone astray in the same way.