Which two different saints are mentioned in the introduction as having compared Maharaj to a precious jewel?

The introductory chapter, Chapter 0, mentions two separate saints who used similar metaphors to describe Maharaj's immense value. The first was Gangagir Baba, who, upon seeing Maharaj carrying water, called him "purely a gem" and told the villagers they were lucky to have him. The second was Anandnath Maharaj of Akkalkot, a disciple of the famous Swami of Akkalkot. When Anandnath Maharaj came to Shirdi, he spoke about Maharaj, saying, "This is a diamond. You don't know its true value." Both saints recognized Maharaj's profound spiritual worth, comparing him to precious stones.