Adhyaya 50 — देवपुर्यः, पुराणि, आयतनानि च; श्रीकण्ठाधिपत्य-प्रतिपादनम्
वैवस्वतस्य सोमस्य वायोर्नागाधिपस्य च तक्षके चैव शैलेन्द्रे चत्वार्यायतनानि च
vaivasvatasya somasya vāyornāgādhipasya ca takṣake caiva śailendre catvāryāyatanāni ca
There are also four sacred abodes—those associated with Vaivasvata (Yama), Soma, Vāyu, and the Lord of the Nāgas; likewise, abodes connected with Takṣaka and with Śailendra. Through such consecrated seats, devotion to Pati (Śiva) is made steadfast, and the paśu (bound soul) is led toward release from pāśa (bondage).
Suta Goswami
It frames specific āyatanas (consecrated sacred seats) linked with cosmic deities and nāga powers as recognized places where Śiva-oriented worship becomes especially established and fruitful.
By implying that diverse divine domains ultimately function as sanctioned seats for approaching the supreme Pati, it reflects Śiva-tattva as the integrating lordship that receives worship through many cosmic channels.
Kṣetra-sevā and āyatana-upāsanā—pilgrimage, residence, or worship at consecrated sites supporting liṅga-pūjā—serving as an outer aid aligned with inner Pāśupata discipline (loosening pāśa for the pashu).