In the sacred tradition, there are precise guidelines for purification and conduct, especially concerning water and respectful behavior towards teachers. One should never rinse with rainwater, nor while standing, nor with water that has merely been drawn up. Such acts are not permitted while sitting on sandals or a seat, nor with the knees extended outward, nor in any improper manner. Water that is foamy or otherwise impure, or that has been gazed upon by others, should not be used for rinsing. Making noise with the fingers or performing these acts with a distracted mind is also discouraged. Moreover, one should not use agitated hands or perform purification outside the proper enclosure. Water that has been sipped by Vaiśyas, women, or Śūdras—even by touch—must not be used for purification. For honoring the ancestors, the water held between the thumb and forefinger is considered the highest. The water at the fingertips is called ‘divine’ and is also declared as ‘āṛṣa,’ belonging to the seers. Understanding these distinctions prevents confusion, for this alone is the auspicious sacred practice. O twice-born, whether impurity arises from the body, fate, or ancestral means, one must cleanse and touch the mouth with the base of the thumb. Using the union of the index finger and thumb, one should touch both sides of the nose. Alternatively, one may touch the head with the thumb, or touch both sides. It is heard that by such gestures, Brahma, Vishnu, and Mahesha become present. When both eyes are touched, the Moon and Sun are pleased; likewise, touching both ears pleases the Wind and Fire. By touching the crown of the head, one attains singular satisfaction. If the tongue touches the teeth or objects attached to the teeth, impurity results. Objects placed on the ground are to be regarded as equal to the earth; one should not use them without proper intention. However, Manu declares that fruits, roots, or sugarcane are free from fault. When such substances are placed on the ground, one should sip water and sprinkle it, repeating this process as needed. For cloth and similar items, there is an option: after touching them, one should sip water. After passing urine or feces, the hand that holds objects remains undefiled. One should evacuate stool and urine during the day, but at night, it is proper to face south. The head should be covered during such acts. Purification should not be performed in fire, cremation grounds, or in urine or feces. Nor is it permitted while standing, in places without shelter, on mountain summits, among living beings, in pits, or while walking. It should not be done in fields, marshes, sacred fords, or at crossroads; nor on steps, while wearing shoes, holding an umbrella, or in mid-air. Temples of gods and places of water are also to be avoided, as are facing the sun, fire, or moon during purification. Purification must be performed carefully with clean, drawn water. Water from roads, barren places, or that left over by another should not be used. After purification, one should always touch water as prescribed. When called to study, one should look at the teacher’s face. Upon being told to sit, one should do so facing the teacher. It is improper to sit, eat, or stand with one’s back to the teacher. Within the teacher’s line of sight, one should not sit as one pleases, but always with respect and decorum. Thus, these practices ensure purity and reverence in both ritual and learning, honoring the ancestors, the deities, and the teacher.