Vaṃśānuvārṇana and the Transition to the Fourth (Upasaṃhāra) Pada
द्वादशे त्वथ पर्याये रुद्रपुत्रस्य वै मनोः / चतुर्थो रुद्रसावर्णो देवांस्तस्यान्तरे शृणु
dvādaśe tvatha paryāye rudraputrasya vai manoḥ / caturtho rudrasāvarṇo devāṃstasyāntare śṛṇu
In the twelfth cycle, in the age of Manu, the son of Rudra, the fourth is Rudrasāvarṇa; hear the Devas of that interval.