Which saint called Maharaj a 'gem' upon first seeing him, and what were the circumstances?

According to the introduction in Chapter 0, it was Gangagir Baba who referred to Maharaj as a 'gem'. The first time Gangagir Baba saw Maharaj after he had arrived in the area, Maharaj was carrying two earthen pots of water from the well in both his hands. Upon seeing this, Gangagir Baba immediately remarked to the nearby villagers, "When did this form come here? This is purely a gem. His worth is very great. The village is very lucky that you got this gem." This encounter highlights how other holy men instantly recognized Maharaj's spiritual stature.