
Definition of Ardha-sama (Half-equal) Metres (अर्धसमनिरूपणम्)
火神阿耆尼继续向圣者婆悉吒传授《韵律学》(Chhandas-śāstra),由 viṣama(不齐、不均)韵式转入 ardha-sama(半齐)韵式的分类。本章先列举此类所传记的诸韵:Upacitraka、Sa-samānā、Bhojabhagā、Drūtamadhyā、Bhagāgathā、Unanā、Jayā,继而详述用以辨识与构作它们的 gaṇa 组合次序与具名节奏型。又分别叙事体韵律模式(ākhyānikā)及其 viparīta(倒置)对应,举出 Rajasā、Gogatha、Droṇa、Ketumatī、Jagāgatha、Tatajagāgatha 等例,并补充 Dhariṇavallabhā、Aparākrama、Puṣpitā 等名目。末段示范 samavṛtta(等音节)结构,明列 gaṇa 次第与 mātrā(以 nāga 为单位)计数,并示其逆式 Khañjā,彰显韵律之学为精密可复现之 śāstra,与持戒之言语与达摩文化相应。
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The chapter emphasizes identification and construction of ardha-sama metres through explicit gaṇa-sequences (e.g., Vegavatī’s bha-bha-bha-ga-go-ga-tha), named pattern-sets (including Rudra-vistāra), and mātrā/nāga-based counting culminating in a samavṛtta demonstration with a defined reverse-form (Khañjā).
By disciplining speech through exact metrical knowledge, it supports dhārmic communication, accurate preservation of sacred and literary utterance, and cultivated aesthetic order—treating linguistic precision as a form of sādhana that complements ritual life and ethical culture on the path toward puruṣārtha.