How is the transformation of the Buti Wada into the Samadhi Mandir described as a 'great fortune'?

The transformation is described as the mansion's "great fortune" being realized by a "stroke of fate and by Sai’s command." As detailed in Chapter 39, Bapusaheb Buti was initially filled with regret when Baba was dying, thinking his mansion was useless. However, Baba's last words, "Place me in the mansion," turned this potential failure into a profound blessing. The text explicitly calls Buti's luck "blessed," as his own house became the final resting place for the holy body of Shri Sai. This outcome brought satisfaction to everyone and immortalized both Buti's devotion and the structure itself, turning it from a simple temple into the revered Samadhi Mandir.