No we do not have any such tradition . The Rajpoot clan in Punjab mostly still holds this tradition of not marrying outside the family whereas Pukhtuns do not have any such tradition.
Dude, I am a rajput and I am married to a Chinese, forget about same cast or race, LOL. A huge part of my cousins are married outside Rajputs, no one gives two hoots about this anymore.
But I guess, I should disclose such personal information, lol.