मुनिमोहशमनम्
Pāśupata-yoga, Siddhis, Puruṣa-darśana, Saṃsāra, and Prāṇa-Rudra Pañcāhutī
आपः पूताः सकृत्प्राश्य तूष्णीं हुत्वा ह्युपाविशन् प्राणायेति ततस्तस्य प्रथमा ह्याहुतिः स्मृता
āpaḥ pūtāḥ sakṛtprāśya tūṣṇīṃ hutvā hyupāviśan prāṇāyeti tatastasya prathamā hyāhutiḥ smṛtā
Having sipped the purified water once and offered the oblation in silence, one should then sit down. Thereafter, the offering made with the mantra “prāṇāya” is remembered as the first āhuti, beginning the discipline of breath that steadies the pashu (individual soul) for worship of Pati, Śiva.
Suta Goswami (narrating Puja/Yogic procedure within the Linga Purana discourse)
It prescribes the purificatory sequence—ācamana (sipping sanctified water), a silent offering, and seated composure—so the worshipper becomes fit to begin the first āhuti, aligning body and breath before approaching the Linga as Pati (Śiva).
Śiva is implied as Pati, the Lord approached through inner purification: the pashu (bound soul) steadies prāṇa and mind, reducing pasha (bondage) so devotion and ritual can become a means toward Śiva-realization.
Ācamana with purified water, a tūṣṇīm (silent) āhuti, then the first mantra-oblation “prāṇāya,” indicating pranayama as a foundational Pashupata-aligned preparation for Śiva-pūjā.