法苑珠林 9.82

9.82

As for the twenty-second mark, the Brahma-voice, according to the *New Mahāvibhāṣā-śāstra*, it says: The Tathāgata's mark of the Brahma-voice means that within the Buddha's throat there are subtle and sublime great elements that can produce a pleasing, harmonious, and elegant Brahma-voice, like the kalaviṅka bird, and produce a deep, far-reaching sound like thunder, like Śakra's drum. Such a voice possesses eight virtues: first, deep and far-reaching; second, harmonious and elegant; third, distinct and clear; fourth, pleasing to the ear; fifth, penetrating the mind; sixth, generating joy; seventh, easily understood; eighth, untiring.