Adhyaya 89: शौचाचारलक्षणम् — सदाचार, भैक्ष्यचर्या, प्रायश्चित्त, द्रव्यशुद्धि, आशौच-निर्णय
अष्टाब्दाद् एकरात्रेण शुद्धिः स्याद् बान्धवस्य तु द्वादशाब्दात्ततश्चार्वाक् त्रिरात्रं स्त्रीषु सुव्रताः
aṣṭābdād ekarātreṇa śuddhiḥ syād bāndhavasya tu dvādaśābdāttataścārvāk trirātraṃ strīṣu suvratāḥ
Para un pariente, después de los ocho años, la purificación de la impureza por muerte se cumple en una sola noche. Pero desde los doce años en adelante, en el caso de mujeres de buenos votos (suvratā), la purificación ha de observarse durante tres noches.
Suta Goswami
It sets the minimum purification periods after bereavement, indicating when a devotee may properly return to Shiva-puja and Linga-archana without the बाधा (ritual obstruction) of ashauca.
Implicitly, it presents Shiva as Pati—the Lord approached through ordered dharma: purity disciplines regulate the devotee’s readiness to re-enter worship, so the pashu (bound soul) moves from disturbance toward sattvic steadiness.
Ritual discipline (niyama) regarding ashauca-shuddhi—observing one-night or three-night purification—so that Shiva-puja and related vows can be resumed in the proper state.