एकोनविंशतिशिवावतारवर्णनम्
Description of the Nineteen Manifestations/Avatāras of Śiva
वैवस्वतेऽन्तरे सम्यक् प्रोक्ता हि परमात्मना । योगेश्वरावताराश्च सर्वावर्तेषु सुव्रताः
vaivasvate'ntare samyak proktā hi paramātmanā | yogeśvarāvatārāśca sarvāvarteṣu suvratāḥ
In the Vaivasvata Manvantara, these matters were indeed taught clearly by the Supreme Self (Paramātman). And in every cosmic cycle as well, the incarnations of the Lord of Yoga (Śiva)—those of holy vows—manifest.
Suta Goswami (narrating Shiva Purana teachings to the sages at Naimisharanya)
Tattva Level: pati
Shiva Form: Dakṣiṇāmūrti
Cosmic Event: Manvantara-cycle framing (Vaivasvata Manvantara; recurring cosmic cycles/āvartas)
It affirms Shiva as Paramatma and Yogeshvara who repeatedly manifests in different cosmic eras to re-establish yogic discipline and guide beings toward liberation.
By declaring that the Supreme Self teaches and manifests, the verse supports Saguna worship—such as Linga worship—as a valid means to approach the Nirguna-Paramatma Shiva through accessible forms and teachings.
The takeaway is steadfast yogic vrata: daily japa of the Panchakshara (Om Namah Shivaya), meditation on Shiva as Yogeshvara, and disciplined conduct aligned with Shaiva vows.