Original: The Vedic Samhitas contain references to ascetics, while ascetic practices ("tapas") are referenced in the ((Brahmana)) (900 to 500 BCE), early commentaries on the Vedas.
Simplified: The Vedic Samhitas contain references to ascetics, while ascetic practices (tapas) are referenced in the ((Brahmana)) (900 to 500 BCE), early commentaries on the Vedas.