[2] The capital of Sindhu-Sauvīra was named Roruka and Vītabhaya or Vītībhaya, and corresponds to the mediaeval Arohṛ and the modern-day Rohṛī.

[2][3][1] During the 6th to 5th centuries BCE, the Sindhu-Sauvīra was ruled by a powerful king named Udāyana or Udrāyaṇa or Rudrāyaṇa by various sources.

[1][4][2] Udāyana was married to the princess Prabhāvatī, who was the daughter of Ceṭaka, the consul of the powerful Vajjika League in north-east South Asia, and was herself thus the cousin of the 24th Jain Tīrthaṅkara Mahāvīra, himself the son of Chetaka's sister Trisalā.

[7] Therefore, according to Jain sources, Udāyana converted to Jainism after hearing Mahāvīra preach at Vītabhya, and he abdicated his throne and became a Jain monk after installing his nephew by his sister, Keśīkumāra, as king of Sindhu-Sauvira, instead of his own son, Abhijitkumāra, who found asylum at the court of Kūṇika, the governor of the Āṅgeya city of Campā for the count of the king of Magadha.

[3][2] However, Buddhist sources instead claim that Udrāyaṇa embraced Buddhism and was ordained by the Buddha.