What core spiritual teaching did Sai Baba impart to Cholkar following the incident with the sugared tea?

Following the miraculous revelation about the sugar, Sai Baba used the opportunity to impart a profound spiritual lesson about his true nature. As recorded in Chapter 15, Baba explained his omnipresence. He told Cholkar, 'Even if my body is here, and you are beyond the seven seas, Whatever you do there, I know it instantly.' Baba taught that he resides within the devotee's heart, stating, 'My home is in your heart; I am your inner self.' He expanded this to say he exists in all beings and creatures, from insects and ants to every person one meets. The ultimate teaching was one of non-duality and unity: 'Do not keep any distance from me; you and I are one.'