Upamanyu’s Tapas, Shiva’s Indra-Form Test, and the Bestowal of Kshiroda and Gaṇapatya
हिमवत्पर्वतं प्राप्य वायुभक्षः समाहितः तपसा तस्य विप्रस्य विधूपितमभूज्जगत्
himavatparvataṃ prāpya vāyubhakṣaḥ samāhitaḥ tapasā tasya viprasya vidhūpitamabhūjjagat
抵达喜马瓦特山后,那位婆罗门——以风为食,心神专一——修行苦行(tapas)之力,竟使整个世界震荡翻动。依湿婆悉檀多之义,专注的tapas能令被系缚的宇宙(pāśa-baddha jagat)战栗,而唯有真实的主宰Pati恒常不动。
Suta Goswami (narrating to the sages of Naimisharanya)
It highlights that inner discipline (tapas and samādhi) is a core Shaiva means to approach Shiva; Linga worship is not only external ritual but also the yogic “heat” of focused consciousness offered to Pati.
By showing the world can be shaken by a jīva’s tapas, it indirectly points to Shiva as Pati—transcendent, steady, and sovereign—while the cosmos remains within change and agitation under pāśa.
Severe asceticism and breath-based restraint (vāyubhakṣa, prāṇa-sustenance) combined with mental one-pointedness (samāhita), aligning with Pāśupata-style tapas as a purifier of bondage.