अग्नित्रय-पितृवंश-रुद्रसृष्टि-वैराग्योपदेशः
असूत मेना मैनाकं क्रौञ्चं तस्यानुजामुमाम् गङ्गां हैमवतीं जज्ञे भवाङ्गाश्लेषपावनीम्
asūta menā mainākaṃ krauñcaṃ tasyānujāmumām gaṅgāṃ haimavatīṃ jajñe bhavāṅgāśleṣapāvanīm
Menā gave birth to Maināka and Krauñca, and also to their younger sister Umā. From Himavat was born Gaṅgā, the daughter of the Himalayas—made supremely purifying through her intimate contact with Bhava (Śiva).
Suta Goswami (narrating to the sages of Naimisharanya)
It grounds Linga-abhisheka symbolism: Gaṅgā is declared intrinsically purifying because of her association with Bhava (Śiva), making her the foremost sanctifier in Śiva-pūjā and consecrations.
Śiva is indicated as Bhava—the source of becoming and the supreme purifier (Pati) whose mere contact sanctifies, implying transcendence over mala (impurity) and bondage while granting purity to pashus (souls).
Śiva-abhisheka with Gaṅgā-jala is implied as a primary purificatory rite; it supports Pāśupata-oriented purification (śauca) as a prerequisite for worship and inner discipline.