Mundan, also known as the first haircut, is a significant ritual in Hindu tradition where a child's hair is shaved off, usually during the first or third year of life. It is believed that the hair present at birth is associated with undesirable traits from past lives. The ritual cleansing is thought to purify the child, promote healthy hair growth, and bring good fortune. Typically, Mundan is performed in odd years (1, 3, 5, etc.) as odd numbers are considered auspicious and bring positive energy according to Hindu beliefs. The exact timing and adherence to this practice can vary depending on regional customs and family traditions.