grow up to become arhat disciples of the Buddha. According to the Pali tradition, Upatiṣya's father was named Vangunta, while according to Mūlasarvāstivāda tradition his father was named Tiṣya (Pali: Tissa). Upatiṣya's mother was named Śārī (alternatively called Rūpaśārī, Śārika, or Śāradvatī), because she had eyes like a śārika bird. His mother was the reason Upatiṣya later became known as Śāriputra (son of Śāri) and sometimes Śāradvatīputra (son of Śāradvatī). Upatiṣya was born the same day as Kolita (who would later be known as Maudgalyāyana), a boy from a neighboring village whose family had been friends with Upatiṣya's family for seven generations, and became friends with him as a child. Upatiṣya and Kolita both became masters of the Vedas through their education and each developed a large following of brahmin youths. One day the realization that life is impermanent overtook the two friends during a festival in Rājagaha and they developed a sense of spiritual urgency. Realizing the pointlessness of the impermanent material world, the two friends set out as ascetics to search for an end to rebirth. In Mūlasarvāstivāda texts, the two friends visited all six major teachers of India at the time before realizing none of them had the right path. According to Pali texts, the two friends and their following of brahmin youths became students under only one of the teachers, the ascetic Sañjaya Vairatiputra (Pali: Sañjaya Belaṭṭhaputta), who was staying nearby. Pali texts describe Sañjaya as a teacher in the Indian Sceptic tradition, with Upatiṣya and Kolita eventually becoming dissatisfied with his teachings and leaving. In Mūlasarvāstivāda texts, the Chinese Buddhist Canon and in Tibetan accounts, however, he is depicted as a wise teacher with meditative vision who becomes ill and dies. In some accounts, he predicts the coming of the Buddha through his visions. After being unable to find what they were looking for, the two friends went their separate ways but made a pact that if one was to find the path to Nirvana, he would tell the other. Meeting the Buddha After leaving Sañjaya, Upatiṣya encountered the monk Aśvajit (), one of the Buddha's first five arhat disciples. Upatiṣya noticed how serene the monk appeared and approached him to ask for a teaching. Aśvajit said he was still newly ordained but would teach what he can, and proceeded to teach the famous Ye Dharma Hetu stanza: This stanza has become particularly famous in