Bahuśrutīya
Bahuśrutīya (Sanskrit) was one of the early Buddhist schools, according to early sources such as Vasumitra, the "Śāriputraparipṛcchā", and other sources, and was a sub-group which emerged from the Mahāsāṃghika sect. Etymology. The name "Bahuśrutīya" means literally "those who have heard much," meaning "well-learned." The Chinese translation for the name of this sect, "Duowen Bu" (多聞部), literally the "much-heard sect," also corresponds to this etymology. Vasumitra's history, the "Samayabhedoparacanacakra", records the following explanation of the name and characteristics of the Bahuśrutīya sect: Origins. Paramārtha, a 6th-century monk from Ujjain in central India, wrote that  the founder of the Bahuśrutīya sect was named Yājñavalkya. In Paramārtha's account, Yājñavalkya is said to have lived during the time of the Buddha, and to have heard his discourses, but was in a profound state of samādhi during the time of the Buddha's parinirvāṇa. After Yājñavalkya emerged from this samādhi 200 years later, he discovered that the Mahāsāṃghikas were teaching only the superficial meaning of the sūtras, and he therefore founded the Bahuśrutīya sect in order to expound their full meaning. Paramārtha links the origins of the Bahuśrutīya sect to the Mahāyāna teachings: Doctrines and canon. The  translator Paramārtha wrote that the Bahuśrutīyas accepted both the Hīnayāna and Mahāyāna teachings. According to Paramārtha, the Bahuśrutīya school was formed in order to fully embrace both "conventional truth" and "ultimate truth." According to Sree Padma and Anthony Barber, the Bahuśrutīya understanding of this full exposition included the Mahāyāna teachings. According to Vasumitra, the Bahuśrutīyas considered the Buddha's teachings of impermanence, suffering, emptiness, anātman, and Nirvāṇa to be supramundane, while his expositions on other subjects were to be considered mundane. K. Venkata Ramanan writes: Like the other Mahāsāṃghika sects, the Bahuśrutīyas believed that arhats were fallible. Section::::"Tattvasiddhi Śāstra". Overview . The "Tattvasiddhi-Śāstra", also called the "Satyasiddhi Śāstra", is an extant abhidharma text written by Harivarman, a 4th-century monk from central India. Harivarman is often thought to come from the Bahuśrutīya school, but the "Tattvasiddhi" contains teachings more similar to those of the Sautrāntika Sarvāstivādins. This abhidharma is now contained in the Chinese Buddhist canon in sixteen fascicles (Taishō Tripiṭaka 1646). Paramārtha cites this abhidharma text as containing a combination of Hīnayāna and Mahāyāna doctrines, and Joseph Walser agrees that this assessment is correct. Ian Charles Harris also characterizes the text as a synthesis of Hīnayāna and Mahāyāna, and  notes that its doctrines are very close to those in Mādhyamaka and Yogācāra works. The "Tattvasiddhi" includes the teaching of "dharma-śūnyatā", the emptiness of phenomena. This text also mentions the existence of a "Bodhisattva Piṭaka". Legacy in East Asia. The "Tattvasiddhi Śāstra" maintained great popularity in Chinese Buddhism, and even lead to the formation of its own school of Buddhism in China, the Tattvasiddhi School, or "Chéngshí Zōng" (成實宗), which was founded in 412 CE. As summarized by Nan Huai-Chin: The Tattvasiddhi School taught a progression of twenty-seven stations for cultivating realization, based upon the teachings of  the "Tattvasiddhi Śāstra". The Tattvasiddhi School took Harivarman as its founder in India, and Kumārajīva as the school's founder in China. The Satyasiddhi School is counted among the Ten Schools of Tang Dynasty Buddhism. From China, the Satyasiddhi School was transmitted to Japan in 625 CE, where it was known as "Jōjitsu-shu" (成實宗). The Japanese Satyasiddhi school is known as one of the six great schools of Japanese Buddhism in the Nara period (710-794 CE).