According to Chapter 38, what is the significance and scriptural basis for food donation (Annadan)?

Chapter 38 elevates food donation, or Annadan, to the highest form of charity. It states that while penance, knowledge, and sacrifice were virtues for previous ages, charity is the primary virtue for the current Kali age. The text emphasizes that food is the 'form of Para-Brahman' (the Supreme Reality) from which all beings are born and into which they eventually merge. The chapter argues that nothing is superior to Annadan and that turning away a hungry guest invites one's own downfall. As proof of its importance, the text cites the Shrutis (Vedas) and notes that Sai Baba himself followed this worldly custom by feeding people, reinforcing its spiritual merit.