जनकसुता हरि दास कहावो, ताकी शपथ विलम्ब न लावो । Hanuman is commonly considered a "Chiranjivi," which implies an immortal currently being or one who lives eternally in Hindu mythology. This position being a Chiranjivi is attributed to his unique and divine qualities. Here is an evidence of Hanuman's Chiranjivi https://directoryio.com/listings730688/considerations-to-know-about-bajrang-baan