Ṣaḍvidhārtha-Parijñāna: Praṇavārtha and the Sixfold Unity of Meaning (षड्विधार्थपरिज्ञानम् / प्रणवार्थपरिज्ञानम्)
ईशानस्यैव देवस्य चतुर्व्यूहपदे स्थितम् । पुरुषाद्यं च सद्यांतं ब्रह्मरूपं चतुष्टयम्
īśānasyaiva devasya caturvyūhapade sthitam | puruṣādyaṃ ca sadyāṃtaṃ brahmarūpaṃ catuṣṭayam
Allein in der vierfachen Emanationsstätte (Caturvyūha) des Herrn Īśāna ist die Brahman-Gestalt als Vierheit gegründet—beginnend mit Puruṣa und endend mit Sadya.
Suta Goswami
Tattva Level: pati
Shiva Form: Īśāna
It teaches that the supreme Lord Īśāna (Shiva as Pati) is the ground of the fourfold manifestation—Brahman is not separate from Shiva, but abides in Him as ordered aspects, guiding the seeker from conceptual understanding toward liberation.
By presenting Īśāna as the locus of the fourfold Brahman-form, the verse supports Saguna worship (such as Linga-upāsanā) as a valid doorway: the devotee approaches the manifest Lord, while realizing that the manifest forms rest in the one supreme Shiva.
Meditate on Īśāna as the inner ruler while reciting the Panchākṣarī (Om Namaḥ Śivāya), contemplating the Lord as the source of the fourfold manifestation; this aligns mantra-japa with tattva-vicāra (philosophical contemplation).