अधोलोकवर्णनम् (Adholoka-varṇana) — Description of the Lower Worlds and Cosmographic Measures
वरांशो ह्येष विज्ञेयो नाडिका चात्र कारणम् / संवत्सरादयः पञ्च चतुर्मानविकल्पिताः
varāṃśo hyeṣa vijñeyo nāḍikā cātra kāraṇam / saṃvatsarādayaḥ pañca caturmānavikalpitāḥ
This ‘varāṃśa’ is to be understood; here the nāḍikā is the determining cause. The five measures beginning with the saṃvatsara are set forth in four human reckonings.