There are several legendary tales about the birth of Tsangyang. Apparently, His mother, Tsewang, had experienced a few miracles prior to the birth of Tsangyang Gyamtso. One day, within the first month of her pregnancy, she was husking paddy in the stone mortar. To her surprise, water started accumulating in the mortar. On another occasion, when Tsewang drank water at a nearby place, milk started gushing out in place of water. Since then, this stream was known as "Oma-Tsikang", literally known as milky water.