佛頂尊勝陀羅尼經教跡義記 1.44

1.44

第三正解其主字者，依〈大智度論〉云：「有其五種：一者佛說；二者聖弟子說；三者諸天說；四者神仙說；五者變化說。」今明此經即是佛說，佛為教主也。言佛者，以覺為義，有其三種：一者自覺；二者覺他；三者覺滿。聲聞為得生空智，但能自覺；菩薩雖得法空智，為覺未滿；諸佛自覺覺他覺行圓滿，故稱為佛也。佛者，三界法王、四生慈父，放神光於千剎、灑法雨於五燒，所以外道歸依、天魔稽首，玉毫皎潔地獄照以消亡，頂相岧嶢天人莫覩其際，難解難測，故號佛焉。上來雖有三種不同，總明第四釋主成就竟。

As for the third, correctly explaining the word "host": According to the Dàzhìdù lùn, "There are five kinds [of speakers]: first, spoken by the Buddha; second, spoken by holy disciples; third, spoken by gods; fourth, spoken by ṛṣis; fifth, spoken by apparitional beings." Here it is clarified that this sūtra is spoken by the Buddha; the Buddha is the teaching lord. The word "Buddha" takes "awakened" as its meaning, and there are three kinds: first, self-awakened; second, awakening others; third, fully awakened. A śrāvaka, because of attaining the cognition of the emptiness of persons, can only awaken himself. A bodhisattva, although attaining the cognition of the emptiness of phenomena, has not yet fully awakened. The buddhas are self-awakened, awaken others, and are fully perfected in awakened practice; therefore they are called "Buddha". The Buddha is the Dharma King of the three realms, the compassionate father of the four modes of birth; he emits divine radiance throughout a thousand lands and showers the Dharma rain onto the five burnings. Therefore non-Buddhists take refuge in him and heavenly māras bow their heads; his white ūrṇā is brilliant, so that hells shine and are extinguished by it; his uṣṇīṣa is lofty, so that gods and humans cannot see its summit. Difficult to comprehend and difficult to fathom, he is therefore named "Buddha". Although there are three different aspects above, the fourth [section], explaining the fulfilment of the host, is concluded in summary.