In Bagavat Gita there is not mentioned Hidu word anywhere.Gita for all human being.Bagawan said All creature have soul which is same form, thereis no any diffrense. Bhagawat gita chapter 6 verse 29
Chapter 6. Sankhya-yoga TEXT 29
sarva-bhuta-stham atmanam sarva-bhutani catmani iksate yoga-yuktatma sarvatra sama-darsanah A true yogi observes Me in all beings, and also sees every being in Me. Indeed, the self-realized man sees Me everywhere Save our culture.