Hanuman Chalisa, Chaupai 25
"nāsai rog harai sab pīrā" is Chaupai 25 of the Hanuman Chalisa, which Tulsidas wrote in Awadhi. It means: Illness is destroyed and every pain taken away for one who repeats the name of brave Hanuman without a break. Read it slowly, one half at a time, and say the Awadhi aloud.
नासै रोग हरै सब पीरा ।जपत निरंतर हनुमत बीरा ॥nāsai rog harai sab pīrājapat nirantar hanumat bīrā
Illness is destroyed and every pain taken away for one who repeats the name of brave Hanuman without a break.
Tulsidas, Hanuman Chalisa, Chaupai 25, Gita Press reading
This line praises Hanuman or speaks to the reader. It does not retell one episode, so there is no single place in the Ramayana to point to.
Awadhi text: Goswami Tulsidas, Gita Press reading, checked against three Gita Press printings and Rambhadracharya's Mahaviri. English meaning and word glosses: Wisdom's own, following the traditional reading, edited by Ankur Shukla.