Surah 37. As-Saffat, Ayah 70

I.e., blind imitation (taqlid) of the - obviously absurd - beliefs, valuations and customs of one's erring predecessors, and disregard of all evidence of the truth supplied by both reason and divine revelation, is here shown to be the principal cause of the suffering referred to in the preceding passage (Zamakhshari).

A grim reproach. 'You found your fathers doing wrong; and you must rush headlong in their footsteps to perdition!'