Based on Chapter 33, what is the recommended practice for using Udi for purification?

Chapter 33 of the Shri Sai Satcharita outlines a daily practice for using Udi to achieve purification. The text advises that after completing one's morning face-washing and bathing, a devotee should apply the sacred Udi. In addition to external application, it is also recommended to consume it by drinking it along with Charanteerth, which is holy water from the feet of the Guru or a deity. The scripture explicitly states that the one who follows this daily ritual will become purified. This practice underscores the importance of both external and internal use of Udi for spiritual cleansing and benefit.