He is as all. Mantra-10

Sri gurubhyo namaha.

The tenth verse of the first part of the Thirumandiram.

தானே இருநிலம் தாங்கிவிண் ணாய்நிற்கும்

தானே சுடும்அங்கி ஞாயிறும் திங்களும்

தானே மழைபொழி தையலு மாய்நிற்கும்

தானே தடவரை தண்கட லாமே. 10.

10: Omnium Gatherum

Holding the worlds apart, as the Heavens high He spreads;

Himself the scorching Fire, Sun and Moon,

Himself the Mother that sends down the rains

Himself the mountains strong and oceans cold.

Com - Holding the worlds apart Siva Himself is the sole support of the world (earth) as the Heavens high He spreads and He spreads everywhere as Ether (Akaashaa) even into the highest of the Heavens. Himself the scorching Fire, Sun and Moon It is He who is manifest as the scorching fire, the sun and the moon. Himself the Mother that sends down the rains He is manifest also as the Truth that showers Grace, like rain from the sky. Himself the mountains strong and oceans cold He is great, strong and immovable (firm) as the mountains and it is He who is cool like the oceans.

*The verse points out that Siva is manifest in all forms.