बन्धमोक्षवर्णनम्
Bondage and Liberation: The Prakṛti–Karma Wheel and Śiva as the Transcendent Cause
सुवर्णप्रतिमां विष्णोरिंद्रा दीनां च निक्षिपेत् । सशिरस्के मध्यकुंभे विष्णुमाबाह्य पूजयेत्
suvarṇapratimāṃ viṣṇoriṃdrā dīnāṃ ca nikṣipet | saśiraske madhyakuṃbhe viṣṇumābāhya pūjayet
One should place a golden image of Viṣṇu, and also images of Indra and of the humble supplicant. In the central pot (kumbha), fitted with its lid, one should invoke Viṣṇu to abide there and worship Him.
Suta Goswami
Tattva Level: pasha
Shiva Form: Sadāśiva
It shows that Shaiva worship can include respectful honoring of other devatās (like Viṣṇu and Indra) within a larger Shiva-centered rite, affirming dharmic harmony while directing the practitioner toward the supreme goal—grace and liberation through Pati (Shiva).
In the ritual sequence, subsidiary devatā worship and kalasha-invocation support purity and order (vidhi) before the main Shaiva focus; such steps prepare the mind for Saguna worship (with form) that culminates in devotion to Shiva as the supreme Lord.
It indicates kalasha worship (madhya-kumbha), with āvāhana (invocation/installation) and pūjā of the invoked deity; as a takeaway, perform focused invocation, offer respectful worship, and keep the mind steady in mantra-bhāva during the rite.