I've heard about Sai Baba's Udi. What are its benefits according to the scriptures?

The Udi, or Vibhuti, from Sai Baba's sacred fire (Dhuni) holds immense significance for devotees. Chapter 35 explains that those who partake of and apply this sacred ash with love at Sai's feet can attain their heart's desires. It is said to be powerful enough to root out even powerful sins and all minor sins upon contact, leading to both inner and outer purity. By using the Udi, devotees can become fulfilled, attaining the four goals of life, including Dharma. The greatness of wearing this Vibhuti is well-known to his followers.