How did Sai Baba react when He learned of Dev's accusation of being deceived, and what did He say to prove He had kept His word?

When Jog presented Dev's letter, Sai Baba revealed his omniscience by stating that the moment a letter is opened before him, its contents and the writer's state of mind are already known. As recounted in Chapter 40, Baba was surprised at the accusation and asked, 'Why then did you call Me?' He then provided the proof, reminding Jog of the Sanyasi's guise. He clarified, 'I said I would come with two others, and I went with two others... Seeing Me come unexpectedly, didn't you fear in your heart that I would ask for money? I removed that doubt.' Baba concluded by affirming the sanctity of his promise, saying, 'the words from My mouth shall never be otherwise.'