He found Magadha prosperous and pious. Of its capital, Patna, he says "by the side of the topes of Asoka has been made a Mahayana monastery very grand and beautiful, there is also a Hinayana one, the two together containing 600 or 700 monks." It is probable that this was typical of the religious condition of Magadha and Bengal. Both schools existed but the Mahayana was the more flourishing. Many of the old sites, such as Râjagṛiha and Gaya, were deserted but there were new towns near them and Bodh Gaya was a place of pilgrimage with three monasteries. In the district of Tamralipti (Tamluk) on the coast of Bengal were 22 monasteries. As his principal object was to obtain copies of the Vinaya, he stayed three years in Patna seeking and copying manuscripts. In this he found some difficulty, for the various schools of the Vinaya, which he says were divided by trivial differences only, handed down their respective versions orally. He found in the Mahayanist monastery one manuscript of the Mahâsânghika rules and considered it the most complete, but also took down the Sarvâstivâdin rules.
After the death of Vasubandhu few names of even moderate magnitude stand out in the history of Indian Buddhism. The changes which occurred were great but gradual and due not to the initiative of innovators but to the assimilative power of Hinduism and to the attractions of magical and emotional rites. But this tendency, though it doubtless existed, did not become conspicuous until about 700 A.D. The accounts of the Chinese pilgrims and the literature which has been preserved suggest that in the intervening centuries the monks were chiefly occupied with scholastic and exegetical work. The most distinguished successors of Asanga were logicians, among whom Diṅnâga was pre-eminent. Sthiramati238 and Guṇamati appear to have belonged to the same school and perhaps Bhavaviveka239 too. The statements as to his date are inconsistent but the interesting fact is recorded that he utilized the terminology of the Sânkhya for the purposes of the Mahayana.
Throughout the middle ages the study of logic was pursued but Buddhists and Jains rather than by Brahmans.240 Vasubandhu composed some treatises dealing exclusively with logic but it was his disciple Diṅnâga who separated it definitely from philosophy and theology. As in idealist philosophy, so in pure logic there was a parallel movement in the Buddhist and Brahmanic schools, but if we may trust the statements of Vâcaspatimiśra (about 1100 A.D.) Diṅnâga interpreted the aphorisms of the Nyâya philosophy in a heterodox or Buddhist sense. This traces the beginnings of Indian logic to a Brahmanic source but subsequently it flourished greatly in the hands of Buddhists, especially Diṅnâga and Dharmakîrti. The former appears to have been a native of Conjevaram and a contemporary of Kâlidâsa. Both the logician and the poet were probably alive in the reign of Kumâragupta (413-455). Diṅnâga spent much time in Nâlanda, and though the Sanskrit originals of his works are lost the Tibetan translations241 are preserved.
The Buddhist schools of logic continued for many centuries. One flourished in Kashmir and another, founded by Candragomin, in Bengal. Both lasted almost until the Mohammedan conquest of the two countries.
From about 470 to 530 A.D. northern India groaned under the tyranny of the Huns. Their King Mihiragula is represented as a determined enemy of Buddhism and a systematic destroyer of monasteries. He is said to have been a worshipper of Śiva but his fury was probably inspired less by religious animosity than by love of pillage and slaughter.
About 530 A.D. he was defeated by a coalition of Indian princes and died ten years later amid storms and portents which were believed to signify the descent of his wicked soul into hell. It must have been about this time that Bodhidharma left India for he arrived in Canton about 520. According to the Chinese he was the son of a king of a country called Hsiang-Chih in southern India242 and the twenty-eighth patriarch and he became an important figure in the religion and art of the Far East. But no allusion to him or to any of the Patriarchs after Vasubandhu has been found in Indian literature nor in the works of Hsüan Chuang and I-Ching. The inference is that he was of no importance in India and that his reputation in China was not great before the eighth century: also that the Chinese lists of patriarchs do not represent the traditions of northern India.
Religious feeling often ran high in southern India. Buddhists, Jains and Hindus engaged in violent disputes, and persecution was more frequent than in the north. It is easy to suppose that Bodhidharma being the head of some heretical sect had to fly and followed the example of many monks in going to China. But if so, no record of his school is forthcoming from his native land, though the possibility that he was more than an individual thinker and represented some movement unknown to us cannot be denied. We might suppose too that since Nâgârjuna and Âryadeva were southerners, their peculiar doctrines were coloured by Dravidian ideas. But our available documents indicate that the Buddhism of southern India was almost entirely Hinayanist, analogous to that of Ceylon and not very sympathetic to the Tamils.
The pilgrims Sung-Yün and Hui-Shêng243 visited Udyana and Gandhara during the time of the Hun domination (518-521). They found the king of the former a pious Buddhist but the latter was governed by an Ephthalite chieftain, perhaps Mihiragula himself, who was a worshipper of demons. Of the Yetha or Ephthalites they make the general observation that "their rules of politeness are very defective." But they also say that the population of Gandhara had a great respect for Buddhism and as they took back to China 170 volumes, "all standard works belonging to the Great Vehicle," the Ephthalite persecution cannot have destroyed the faith in north-western India. But the evil days of decay were beginning. Henceforward we have no more pictures of untroubled piety and prosperity. At best Buddhism receives royal patronage in company with other religions; sectarian conflicts increase and sometimes we hear of persecution. About 600 A.D. a king of Central Bengal named Saśâṅka who worshipped Śiva attempted to extirpate Buddhism in his dominions and destroyed the Bo tree at Bodh Gaya.244 On the other hand we hear of the pious Pûrṇavarman, king of Magadha, who made amends for these sacrileges, and of Śîlâditya, king of the country called Mo-lo-po by the Chinese, who was so careful of animal life, that he even strained the water drunk by his horses and elephants, lest they should consume minute insects.
We know more of Indian Buddhism in the seventh century than in the periods which precede or follow it. The epoch was marked by the reign of the great king, or rather emperor, Harsha-Vardhana (606-648 A.D.), and the works written by Bâṇa, Bhartrihari and others who frequented his court have come down to us. Also we are fortunate in possessing the copious narrative of Hsüan Chuang, the greatest of the Chinese pilgrims, who spent sixteen years (629-645) in India as well as the work known as the "Record of the Buddhist religion as practised in India and the Malay Archipelago," composed by I-Ching who travelled in those countries