Can I use a theme from Theme Forest and build a software to sell in Code Canyon? What are the licensing terms?

Hello Guys.
I am expert in .NET and JavaScript, but very bad in UX. So, I was thinking, is it allowed for the author to use any existing theme from themeforest (say: Metronic), and add necessary code to build a complete software (say: Inventory System) and sell in Code Canyon?
If yes, then where can I get the details of terms and conditions?
Thank you all.

Not unless you have permission from the original author