佛說觀佛三昧海經 1.38

1.38

The Buddha addressed his father, the king: "After the Buddha's parinirvāṇa, if the fourfold assembly, the devas, nāgas, yakṣas, and others wish to bind their thoughts, wish to ponder, wish to practice dhyāna, and wish to attain the correct reception of samādhi—" The Buddha addressed his father, the king: "What is called 'binding one's thoughts'? Some sentient beings take delight in contemplating the Tathāgata's complete bodily marks; some sentient beings take delight in contemplating each and every one of the Tathāgata's primary and secondary marks; some sentient beings take delight in contemplating the Tathāgata's marks in regular sequence; some sentient beings take delight in contemplating the Tathāgata's marks in reverse order; some sentient beings take delight in contemplating the Tathāgata's light; some sentient beings take delight in contemplating the Tathāgata walking; some sentient beings take delight in contemplating the Tathāgata standing; some sentient beings take delight in contemplating the Tathāgata sitting; some sentient beings take delight in contemplating the Tathāgata lying down; some sentient beings take delight in contemplating the Tathāgata begging for almsfood; some sentient beings take delight in contemplating the Tathāgata at his initial birth; some sentient beings take delight in contemplating the Tathāgata at the time he took a consort; some sentient beings take delight in contemplating the Tathāgata at the time he left home; some sentient beings take delight in contemplating the Tathāgata at the time of his austerities; some sentient beings take delight in contemplating the Tathāgata at the time he subdued Māra; some sentient beings take delight in contemplating the Tathāgata at the time he achieved buddhahood; some sentient beings take delight in contemplating the Tathāgata at the time he turned the wheel of the Dharma; some sentient beings take delight in contemplating the Tathāgata when he ascended to the Trāyastriṃśa Heaven to preach the Dharma for his mother; some sentient beings take delight in contemplating the Tathāgata subduing the wilderness spirits; some sentient beings take delight in contemplating the Tathāgata in Nagarahāra when he subdued the nāgas and left his shadow; some sentient beings take delight in contemplating the Tathāgata in the city of Kuśinagara subduing the six teachers, the low-caste Nidhi, and those of evil vinaya and deep-seated wrong views.