Bhagavad Gita · 10.23

रुद्राणां शङ्करश्चास्मि वित्तेशो यक्षरक्षसाम्।वसूनां पावकश्चास्मि मेरुः शिखरिणामहम्॥

rudrāṇāṁ śhaṅkaraśh chāsmi vitteśho yakṣha-rakṣhasām vasūnāṁ pāvakaśh chāsmi meruḥ śhikhariṇām aham

Among the Rudras, I am Shankara (Shiva). Among the Yakshas and Rakshasas, I am Kubera, the lord of wealth. Among the Vasus, I am fire. Among the mountains, I am Mount Meru.

— Bhagavad Gita 10.23

Source: Sacred-Texts.com (Sanskrit) + Bhagavad-Gita.io (translations)