Are there legal issues on selling a game with props?

I have used several props in my game - although they are all acquired free from the asset store. I did not purchase any nor did I download any that popped up with any sort of license agreement (I don’t believe the agreements stated that I could not sell them with my game - but rather just not by themselves as assets, or so I gathered). I just want to make 100% certain I’m not met with a lawsuit should I ever sell the finished product. Thank you!

All assets acquired from the asset store are governed by the same licence - it doesn’t take long to read and it is the only definitive answer as to what you can and cannot do with those assets:
https://unity3d.com/legal/as_terms