true..
i went to get my clock fixed once.. the shop keeper had massive warts on his face, hands and all over. studying medicine; i sugged him a duai. so i wrote on a pice of paper to read surah fathia. and then the duai he should eat
week later when i returned to collect the clock. his warts were gone. i asked the man if he took the medicine he said no he just recited the surah.