Purva Khanda — Chapter 106 — yājñavalkyoktāśaucāpadvṛttyornirūpaṇaṃ — Verse 14

त्रिरात्रं दशरात्रं वा शावमाशौचमुच्यते । ऊनद्विवर्ष उभयोः सूतकं मातुरेव हि

trirātraṃ daśarātraṃ vā śāvamāśaucamucyate / ūnadvivarṣa ubhayoḥ sūtakaṃ mātureva hi