According to Chapter 9, what was the deeper purpose behind Sai Baba's practice of begging for food?

Chapter 9 of the Shri Sai Satcharitra reveals that Sai Baba's lifelong habit of begging for food was not for his own needs but was a profound act for the spiritual welfare of his devotees. The text explains that he followed this practice until the very end of his life for the specific purpose of removing the 'Panchasuna' (five great sins committed in a household) and other transgressions of the people from whom he accepted alms. This act demonstrates his immense compassion, as he took upon himself the sins of householders to purify them.