Did Sai Baba ever make any prophetic statements about his connection to the Buti Wada before it became his tomb?

Yes, Sai Baba made statements that, in hindsight, appear prophetic regarding his connection to the Buti Wada. When the initial plans for the temple and mansion were presented to him, Chapter 39 notes that he joyfully gave his permission. More significantly, he said, "After the temple is complete, we too shall come to stay there." He also looked toward the building and added, "After the mansion is finished, we will use it for ourselves. There we shall talk and walk; there we shall all play together." While these words may have been taken as a promise of his living presence at the time, they took on a deeper meaning when his body was interred there, making the mansion his permanent resting place.