大毘盧遮那成佛經疏 3.49

3.49

偈云「正覺緣導師，聖者聲聞眾，曾遊此地分，佛常所稱譽」者，若山泉福地，眾聖所曾遊履，自屬上條。今此中意言：雖非如上勝處，而是諸佛緣覺及聲聞弟子等得道涅槃之處，或久住其中，又其次也。如西方，八塔及三乘聖眾遺迹甚多，皆是大威德諸天常所護持瞻禮，猶如《般若經》所在之處諸小鬼輩不敢停留，故法驗易成也。佛所稱譽，謂如仙人住山，世尊記說於中易可得道之類是也。復次若人已發菩提心，即是諸佛生地，亦是得道、轉法輪、般涅槃處，亦是久住其中以四威儀廣利眾生之處。雖未聞祕藏，但得三乘共行處，亦名吉祥。謂觀察性空無相無作，無有我人眾生壽者，此是二乘成道入涅槃處，亦是種種《本生經》菩薩棄捨身命學波羅蜜處，皆可就中作漫荼羅。復次自謂已得涅槃生滅度想，是聲聞辟支佛所遊地分，若不得一向求菩提人，即應平治此中，畫作悲生漫荼羅。

The verse says:
'Where the Rightly Awakened Ones, Pratyekabuddhas, Teachers,
And the noble assembly of Śrāvakas
Have once traversed these tracts of land,
Constantly praised by the Buddhas':
If they are blessed sites of mountains and springs where the noble ones once trod, they naturally belong to the superior category above. What is meant here is: although not superior places like those above, places where the Buddhas, Pratyekabuddhas, and Śrāvaka disciples attained the path and nirvāṇa, or dwelt for a long time, are next best. For example, in the Western regions, the eight stūpas and the vestigial traces of the noble assemblies of the three vehicles are very numerous, all constantly guarded, venerated, and circumambulated by devas of great majesty, just as minor ghosts dare not linger where the Prajñāpāramitā Sūtra resides; hence the ritual efficacy is easily accomplished. 'Praised by the Buddhas' refers to cases such as mountain abodes of ṛṣis where the World-Honoured One prophesied that the path could easily be attained therein. Furthermore, if a person has already generated bodhicitta, that itself is the birthplace of all Buddhas, and is also the place of attaining the path, turning the wheel of the Dharma, and entering parinirvāṇa, as well as the place of dwelling long within to extensively benefit sentient beings through the four deportments. Although they have not yet heard the secret treasury, merely obtaining the common practice-sites of the three vehicles is also called auspicious. That is, contemplating inherent emptiness, signlessness, and wishlessness, without self, person, sentient being, or soul—this is the place where the two vehicles attain the path and enter nirvāṇa, and also the place where the Bodhisattva of various Jātakas gave up body and life to practice the pāramitās; in all such places one may make a maṇḍala. Furthermore, conceiving the thought of having attained extinction in the belief that one has attained nirvāṇa is the tract traversed by Śrāvakas and Pratyekabuddhas; if one cannot find someone who seeks bodhicitta exclusively, one should level and prepare such ground to paint the maṇḍala born of compassion.