Presenting a Religious Moli Kalawa Wrist thread Band. Mouli or Kalawa is a cotton red thread roll considered to be very sacred and used for all religious purposes of the Hindus. The Mouli thread is an integral part of any puja. Color: Red, Yellow, Kalava is the sacred Hindu thread also called Mauli in Hindi. It is worn while performing Hindu rituals like YajnaorPuja. It is tied by a priest on the wrists of all the people attending the prayer ceremony. Kalava is tied on the right hand of males and unmarried females, and the left hand of married females. Sometimes it has small yellow parts in between the mostly red string. It sometimes has knots that are tied up while reciting Sanskrit mantras to invoke Brahman and is worn to ward off evil from the person who wears this red thread.