अग्निनिचयः (Agninichaya) / The Accumulation of Sacred Fire & the Classification of Pitṛs by Time-Order
इषश्चैव तथोर्जश्च स्वधावन्तावृदात्दृतौ / सहश्चैव सहस्यश्च घोरावेतापुदात्दृतौ
iṣaścaiva tathorjaśca svadhāvantāvṛdātdṛtau / sahaścaiva sahasyaśca ghorāvetāpudātdṛtau
Ang Iṣa at Ūrja—ang dalawang ito’y tinatawag na svadhāvant at may katangiang vṛdāt-dṛta; ang Saha at Sahasya—ang dalawang ito’y tinatawag na ghora at may katangiang apudāt-dṛta.