Buddhabhadra and his Chinese disciple Xuangao are known to have advocated the twin principles of samadhi (meditative concentration) and prajna (transcendent wisdom). These were later inherited by the Tiantai school of Buddhism, and its patriarchs Huisi and Zhiyi. Buddhabhadra's views in turn stemmed from those of Buddhasena's Dhyāna school in Kashmir, and their meditation manual was translated by Buddhabhadra at behest of Huiyuan, the founder of the Chinese tradition of Pure Land Buddhism. This Indian meditation manual preserved in Taisho Tripitaka 618, and is typically called the Yogacarabhumi Sutra or the Dharmatrata Dhyana Sutra. This text was later prized by the Zen school in China, and parts of its lineage to the Buddha became entangled in sectarian conflicts between factions of Chinese Buddhism.