Adhyaya 71: पुरत्रयवृत्तान्तः—ब्रह्मवरदानम्, मयकृतत्रिपुर-निर्माणम्, विष्णुमाया-धर्मविघ्नः, शिवस्तुति, त्रिपुरदाहोपक्रमः
पुरत्रये तदा जाते सर्वे दैत्या जगत्त्रये पुरत्रयं प्रविश्यैव बभूवुस्ते बलाधिकाः
puratraye tadā jāte sarve daityā jagattraye puratrayaṃ praviśyaiva babhūvuste balādhikāḥ
当三城(特里普拉,Tripura)如是成就之时,遍于三界的一切代底耶皆入于那三重堡垒;依止其中,他们便变得无比强盛。
Suta Goswami (narrating the Tripura episode to the sages of Naimisharanya)
It frames Tripura as a symbol of fortified bondage (pāśa) in the three worlds; Linga worship points the pashu (soul) to Shiva as Pati, the refuge beyond such constructed strongholds.
By implication, it sets up the contrast: asuric power grows through external refuge in Tripura, while Shiva-tattva is the transcendent Lord (Pati) who alone can dissolve the triple limitation and restore cosmic order.
No explicit ritual is stated; the takeaway aligns with Pashupata Yoga—withdrawal from dependence on worldly ‘fortresses’ (attachments) and taking inner refuge in Shiva through japa, dhyāna, and Linga-upāsanā.