Mantra for Raj Purohit

I was reading some article on Pushtimarg religion that CB is showing and came across this article. So The mantra is going to be

Gayatri or Gopal Mantra



His Yajnopavit ritual was done when he was five, in 1483 A.D. (V.S. 1540 Chaitra Shukla Navami). His father gave him the Gayatri mantra, and also initiated him with the Gopal mantra. Lakshman Bhatt was a learned man so he took a keen interest in his child's education. He engaged the best tutors who were well versed in their subjects. Mahaprabhuji's education commenced at the age of seven with the study of the four Vedas. Born with great innate abilities and a brilliant mind, he quickly acquired mastery over the Bhagvat, the Vedas, Purans, Agamas and the Shashtras.


Here is Gopal Mantra

OM KLEEM KRSHNAI GOVINDAI GOPIJAN VALLABHAI SVAHA ||

Thanks for the information.