What were the strange dreams the Patil experienced, and how did they relate to his healing in Chapter 13?

Chapter 13 describes two peculiar dreams the Patil had while suffering from a disease. In the first, a teacher was punishing a student with a cane, breaking his back over a single verse. In the second, stranger dream, a gentleman sat on the Patil's chest and used a grinding stone on it like a mortar, causing him immense agony. Though people often consider dreams illusions, the text notes that upon waking, the Patil felt an unprecedented freshness, and his disease had vanished completely. The marks of the cane or mortar were gone, but the beneficial result—the destruction of his disease and relief from sorrow—was very real, suggesting a miraculous intervention by Sai that worked through these dream experiences.