"tum upkār sugrīvahiṁ kīnhā" is Chaupai 16 of the Hanuman Chalisa, which Tulsidas wrote in Awadhi. It means: You did Sugriva a great kindness. You brought him to Rama and gave him back his kingdom. Hanuman tells each side the other's story, and Rama and Sugriva seal their friendship with fire as witness.
तुम उपकार सुग्रीवहिं कीन्हा ।राम मिलाय राज पद दीन्हा ॥tum upkār sugrīvahiṁ kīnhārām milāy rāj pad dīnhā
You did Sugriva a great kindness. You brought him to Rama and gave him back his kingdom.
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.