The Cambridge History of India, Vol. I: Ancient India v1.c24.74

v1.c24.74

Darçaka appears not to be mentioned by the Buddhist writers, unless indeed he is to be identified with Nāgadāsaka whom they place before Udāyin (Udāyi-bhadda); but he is known to Sanskrit literature as a king of Magadha and the brother of Padmāvatī, the second queen of Udayana, king of Vatsa¹. Udāyin, or Udāyi-bhadda, is known to all the three traditions. To him the Brāhmans and Jains attribute the foundation of Kusumapura on the south bank of the Ganges. The new city, which was either identical with the later Pāṭaliputra or in its immediate neighbourhood, was built near the fortress which Ajātaçatru had established at the village of Pāṭali as a protection against the Vajjian (Vṛiji) confederacy of Licchavis, Videhas, and other clans of N. Bihār. The foundation of Pāṭaliputra is ascribed by the Buddhists to Kālāsoka.