The Principle of Contingent Causation: The Impossibility of Infinite Regress.

[LinuxGal]

And this some men call the Universe.

Nishant's arguments were worded very badly, and he was mixing up two or three different arguments together in a chaotic sense.

That said, are you thinking of contingent as:

1. dependent for its existence on something else, or
   
2. not necessary (i.e., it could've not existed instead or it could've existed in a different way instead)?
   

If 2, then saying that the universe is not contingent is going to be a rather extreme view. This suggests you may be a necessitarian maybe?

https://en.wikipedia.org/wiki/Necessitarianism

If believers can assert the creator of the universe is a necessary being whose existence we are to take as a brute fact to satisfy certain metaphysical worries, then I can also assert that the universe itself is necessary and to be taken as a brute fact, with the advantage (to the delight of the shade of William of Ockham) of making a creator redundant. I can support this by pointing out that we don't know how to create or destroy energy, only change its form.  This makes the total quantity of energy necessary even as the guise it takes on (matter, motion, light) is malleable.