Describe the events surrounding Sai Baba's three-day trance in 1886 as detailed in the provided text.

According to Chapter 44, thirty-two years before his final passing, Sai Baba experienced an attack of asthma on the full moon day of Margashirsha. To endure the bodily state, he declared his intention to draw his life force into the crown of his head for three days. He instructed his devotees not to wake him and pointed to a spot, telling them to dig a samadhi there. His body then became motionless, with no breath or pulse, causing great alarm. This event is described as a state of pure bliss for Sai but a terrifying one for the people, who watched in amazement as two days passed with his body showing no signs of life.