Do Sruti texts mention birth-based or guna-based varna?.
To elaborate (further), are there any instances in Śruti scriptures which explicitly support either or both of birth-based varna and guna-based varna?
Note: I understand that there is already a question regarding Birth-based alone since its OP was only interested in that aspect but this question is asking a more holistic question and hence not duplicate. Thanks.
: Shout out to user ram for the inspiration.