Shloka 236
कृतयुगवर्णनम् तथा राजधर्मोपदेशः
Kṛtayuga Description and Instruction on Royal Dharma
तस्य तावच्छती संध्या संध्यांशश्व॒ ततः: परम् । तीन हजार दिव्य वर्षोका त्रेतायुग बताया जाता है
tasya tāvacchatī sandhyā sandhyāṁśaś ca tataḥ param | trīṇi sahasrāṇi divya-varṣāṇi tretāyugam ucyate, tasya sandhyā-sandhyāṁśau api tulyau (trīṇi-trīṇi śatāni) divya-varṣāṇi; evaṁ sa yugaḥ ṣaṭ-triṁśat-śatāni divya-varṣāṇi bhavati |
ヴァイシャンパーヤナは言った。トレーター・ユガは三千の天年に及ぶと説かれる。その黎明（sandhyā）と終末の薄明（sandhyāṃśa）もまた等しく、それぞれ三百の天年である。ゆえに移行の二期を合わせれば、そのユガは三千六百の天年となる。
वैशम्पायन उवाच
Educational Q&A
The verse teaches a structured view of cosmic time: each yuga has a main span plus transitional periods (sandhyā and sandhyāṃśa), emphasizing that moral and cosmic orders are understood through measured cycles rather than random change.
Vaiśaṃpāyana is explaining yuga chronology, specifying the length of the Tretā-yuga and its two transitional intervals, as part of a broader account of cosmic ages and their measures.