Upamanyu’s Tapas, Shiva’s Indra-Form Test, and the Bestowal of Kshiroda and Gaṇapatya
रराज भगवान् सोमः शक्ररूपी सदाशिवः सितातपत्रेण यथा चन्द्रबिंबेन मन्दरः
rarāja bhagavān somaḥ śakrarūpī sadāśivaḥ sitātapatreṇa yathā candrabiṃbena mandaraḥ
พระภควานโสมะทรงส่องประกายรุ่งเรือง; ส่วนพระสทาศิวะผู้ทรงแปลงเป็นศักระ งามเด่นด้วยฉัตรขาว ดุจเขามันทระที่สว่างด้วยดวงจันทร์
Suta Goswami (narrating to the sages of Naimisharanya)
It frames Shiva’s presence as supreme tejas (spiritual radiance): even when appearing in a deva-form (Śakra), Sadāśiva remains the transcendent Pati, which Linga worship recognizes beyond outer forms.
Shiva-tattva is shown as form-transcending yet form-assuming: Sadāśiva can take Indra’s appearance while retaining sovereign auspiciousness, indicating the Lord’s mastery over māyā and divine manifestations.
The imagery supports upāsanā through dhyāna (contemplation) on Shiva’s luminous sovereignty—useful in Pāśupata-oriented meditation where the yogin discerns Pati’s presence behind all celestial powers.