Hanuman Chalisa, Chaupai 37
"jai jai jai hanumān gosāīṁ" is Chaupai 37 of the Hanuman Chalisa, which Tulsidas wrote in Awadhi. It means: Victory, victory, victory to you, Hanuman, my master. Be kind to me as a guru is kind. Read it slowly, one half at a time, and say the Awadhi aloud.
जै जै जै हनुमान गोसाईं ।कृपा करहु गुरु देव की नाईं ॥jai jai jai hanumān gosāīṁkṛpā karahu guru dev kī nāīṁ
Victory, victory, victory to you, Hanuman, my master. Be kind to me as a guru is kind.
Tulsidas, Hanuman Chalisa, Chaupai 37, 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.