What lesson about fasting and service is taught through the story of the woman in Chapter 32?

In Chapter 32, a story is introduced about a woman who intended to fast for three days without food. However, her plan was altered, and she was guided to prepare and eat puranpolis instead. The chapter uses this incident to impart a profound lesson about spiritual practice. As explained in Chapter 32, the true blessed act and supreme welfare lie in "wearing out the body for others' sake." This indicates that selfless service and beneficial action for others are more valuable than rigid, self-imposed austerities like fasting. The experience was designed to make her understand this principle so deeply that she would never forget it.