युगप्रजालक्षणम् ऋषिप्रवरवर्णनं च
Yuga–Prajā-Lakṣaṇa and the Enumeration of Eminent Ṛṣis
पुरातिक्रान्तवाचित्वात्पुराकल्पस्य कल्प नाम् / मन्त्रब्राह्मणकल्पैश्च निगमैः शुद्धविस्तरैः
purātikrāntavācitvātpurākalpasya kalpa nām / mantrabrāhmaṇakalpaiśca nigamaiḥ śuddhavistaraiḥ
Because the ancient utterance has passed beyond its former age, that primeval kalpa is spoken of by the name “Kalpa”; and in the Nigamas—pure and expansive—it is set forth through the Mantras, the Brāhmaṇas, and the Kalpa-texts.