Translation of the verse 37 from Surah Qaf : Number of verses 45 - - page 520 - Part 26.
Verily, therein is indeed a reminder for him who has a heart or gives ear while he is heedful.
Indeed in that is a reminder for whoever has a heart or who listens while he is present [in mind].
(50:37) Verily there is a lesson in this for everyone who has a (sound) heart and who listens with an attentive mind. *48
*48) In ocher words, either one should have so much of native intelligence that one may think right of one's own accord, or if not so, one should be so free from prejudice and neglect that one may listen with attention when another person tries to make one understand the truth.