Rudra-prasava-varṇana
The Manifestation and Naming of Rudra / Nīlalohita
चतुर्थ देहि मे नाम इत्युक्तः सो ऽब्रवीत्पुनः / ईशानो देवनाम्नासि इत्युक्तः सो ऽरुदत्पुनः
caturtha dehi me nāma ityuktaḥ so 'bravītpunaḥ / īśāno devanāmnāsi ityuktaḥ so 'rudatpunaḥ
“Grant me the fourth name,” he said again. When told, “Among the gods you are named Īśāna,” he wept once more.