This superstition is believed to have roots in various cultural and religious systems where specific days of the week are considered sacred or taboo. In Hinduism, for instance, Friday is associated with the goddess Lakshmi and seen as a day of wealth and domestic rituals, not suitable for acts like bathing a newborn which may be viewed as disruptive or disrespectful. Similar sentiments are echoed in some African and Southeast Asian traditions where each day carries spiritual significance. There is an overarching belief in many traditional communities that the early days of a child’s life are spiritually delicate, and certain times should be avoided for key rituals such as bathing, naming, or piercing. These rules often stem from ancient timekeeping customs and alignments with lunar or astrological cycles, though direct origins are scattered and culturally layered.