釋氏要覽 2.326

2.326

爾雅云善事父母曰孝○諡法云慈愛忘勞曰孝○雜記云。養德順理。不逆於時曰孝○四天王經云。佛告諸弟子。慎汝心念。無受五欲。漱情去垢。無求為首。內以清淨。外當盡孝○梵網經云。佛初坐道樹。成無上覺初結菩薩波羅提木叉以孝順父母師僧三寶孝順至道之法孝名為戒○盂蘭盆經云佛令比丘為七世父母設盆供養佛及自恣僧（世人行孝只於一身釋氏行孝兼為七世父母可謂孝矣）○法苑云持戒即是行孝謂一切眾生皆曾為我父母宗親今持戒不殺生不偷盜等是名行孝。

The Erya says: 'Serving one's parents well is called filial piety.' The Rules for Posthumous Names says: 'Loving with kindness and forgetting one's toil is called filial piety.' The Miscellaneous Records says: 'Cultivating virtue and according with principle, not going against the seasons, is called filial piety.' The Sūtra of the Four Heavenly Kings says: 'The Buddha told the disciples: "Guard your mental thoughts, do not accept the five desires; cleanse your passions and remove defilement, let non-seeking be foremost; be pure within, and practice filial piety to the utmost without."' The Brahmā Net Sūtra says: 'When the Buddha first sat beneath the bodhi tree and attained unsurpassed awakening, he first established the Bodhisattva Prātimokṣa, with filial obedience to parents, teachers, the Saṅgha, and the Three Jewels; filial obedience is the Dharma of the ultimate Way, and filial piety is called the precepts.' The Ullambana-sūtra says: 'The Buddha instructed the monks to set up basin offerings for the parents of seven lifetimes, making offerings to the Buddha and the Pravāraṇā saṅgha (worldly people practice filial piety only for a single lifetime; Buddhists practice filial piety extending to the parents of seven lifetimes, which can truly be called filial piety!).' The Forest of the Dharma says: 'Upholding the precepts is indeed practicing filial piety. That is to say, all sentient beings have once been my parents and clan kin; now upholding the precepts by not killing, not stealing, and so forth is called practicing filial piety.'