The Great Epic of the Bhārata dynasty 7.173.79

7.173.79

vede cāsya samāmnātaṃ śatarudrīyamuttamam |
nāmnā cānantarudreti upasthānaṃ mahātmanaḥ || 79 ||

Those names are founded upon his supremacy, his omnipotence, and his acts. In the Vedas the excellent hymn called Sata Rudriya, hath been sung in honour of that great God called the infinite Rudra. That God is the lord of all wishes that are human and heavenly. He is omnipotent, and he is the supreme master. Indeed, that God pervadeth the vast universe. The Brahmanas and the Munis describe him as the First-born of all creatures. He is the First of all the gods; from his mouth was born Vayu (the wind). And since he always protecteth the creatures (of the universe) and sporteth with them, and since also he is the lord of all creatures, therefore is he called Pasupati. And since his Phallic emblem is always supposed to be in the observance of the vow of Brahmacharya, and since he always gladden the world, therefore he is called Maheswara. The Rishis, the gods, the Gandharvas, and Apsaras, always worship his Phallic emblem which is supposed to stand upright. That worship maketh Maheswara glad. Indeed, Sankara (at such worship) becomes happy, pleased, and highly glad. And since with respect to the past, the future, and the present, that God has many forms, he is, on that account, called Vahurupa (many-formed). Possessed of one eye he blazeth forth in effulgence, or he may be regarded to have many eyes on every side of his body. And since, he possesseth the worlds, he is for that reason called Sarva. And since his form is like that of smoke, he is for that reason called Dhurjjati.