Shloka 15
Vidurā–Putra Saṃvāda: Utsāha, Kīrti, and Kṣātra Resolve
Udyoga-parva 131
दण्डनीत्यां यदा राजा सम्यक् कार्त्स्न्येन वर्तते | तदा कृतयुगं नाम काल: श्रेष्ठ: प्रवर्तते,यदि राजा दण्डनीतिके प्रयोगमें पूर्णतः न्यायसे काम लेता है तो जगत्में 'सत्ययुग' नामक उत्तम काल आ जाता है
daṇḍanītyāṃ yadā rājā samyak kārtsnyena vartate | tadā kṛtayugaṃ nāma kālaḥ śreṣṭhaḥ pravartate ||
当国王在惩治与治国之道（daṇḍanīti）上以完全而公正的正确行事之时，世间便会运行那最上之世代——名为“克利多瑜伽”（Kṛta Yuga）。
वायुदेव उवाच
Educational Q&A
The verse teaches that the moral quality of an age depends on the ruler’s conduct: when a king applies daṇḍanīti fully and rightly—without partiality and with comprehensive justice—society experiences conditions akin to Kṛta (Satya) Yuga, the best of times.
Vāyudeva is speaking about principles of kingship and social order, asserting a causal link between righteous governance (proper use of punishment and law) and the flourishing of an ideal, truth-centered era.