As per the description of Vāyupurāṇa (Vayupurana), Udāyī (Udayi) is one of the kings belonging to Śiśunāga dynasty, who ruled over Magadha in Kaliyuga. He was the son of King Darśaka (Darsaka). Nandivardhana was the son of Udāyī (Udayi). The Purāṇa (Purana) mentions that Udāyī ruled for thirty three years. During his reign, a new capital called Kusumapura was established in Magadha.