Shiva Purana — Vayaviya Samhita, Shloka 9
लिङ्गप्रतिष्ठा-माहात्म्यम् / The Greatness of Liṅga Installation
अशुद्धं चैव शुद्धं यच्छुद्धाशुद्धं च तत्त्रिधा । ततः शिवो महेशश्च रुद्रो विष्णुः पितामहः
aśuddhaṃ caiva śuddhaṃ yacchuddhāśuddhaṃ ca tattridhā | tataḥ śivo maheśaśca rudro viṣṇuḥ pitāmahaḥ
彼至上原理实为三分：不净、清净，以及清不净相杂。由彼而起诸宇宙职能及其主宰神祇：湿婆（Śiva）、大自在天（Maheśa）、鲁陀罗（Rudra）、毗湿奴（Viṣṇu）与毗多摩诃（Pitāmaha，梵天）。
Suta Goswami
Tattva Level: pasha
Shiva Form: Sadāśiva
Cosmic Event: tattva-classification (tri-fold modality: śuddha/śuddhāśuddha/aśuddha) and functional emanation
FAQs
It frames reality in a threefold way—impure, pure, and mixed—then shows how the manifest divine roles (including Brahmā and Viṣṇu) proceed from that principle, with Śiva as the supreme ground in Shaiva understanding.
By teaching that the many divine names and functions arise from one source, it supports Saguna worship (Linga/Śiva-forms) as an approach to the transcendent Śiva who underlies pure, impure, and mixed states.
Contemplate the threefold condition of bondage and purity while repeating the Pañcākṣarī (“Om Namaḥ Śivāya”), aiming to move from mixed/impure conditioning toward purity and Śiva-realization.