“O hero, your determination and sterling prowess, coupled with Sugriva’s words, tell Me certainly of success.†(Lord Rama speaking to Hanuman, Valmiki Ramayana, Kishkindha Kand, 44.14)
Trusting Hanuman is a collection of seventeen essays discussing the verses in the Ramayana where Sugriva and Lord Rama go over Hanuman's capabilities with respect to finding the missing princess Sita Devi.