यज्ञप्रवर्तनम् (Yajña-pravartana) — The Institution/Commencement of Sacrifice in Dvāpara
प्रजासु भ्रूणहत्या च तदा वैरात्प्रवर्त्तते / तस्मादायुर्बलं रूपं कलिं प्राप्य प्रहीयते
prajāsu bhrūṇahatyā ca tadā vairātpravarttate / tasmādāyurbalaṃ rūpaṃ kaliṃ prāpya prahīyate
Then among the people, out of enmity, even the slaying of the unborn arises. Therefore, upon the advent of Kali, lifespan, strength, and beauty decline.