Buddhism traditionally incorporates states of meditative absorption (Pali: jhāna; Skt: dhyāna). The most ancient sustained expression of yogic ideas is found in the early sermons of <answer>the Buddha</answer>. One key innovative teaching of <answer>the Buddha</answer> was that meditative absorption must be combined with liberating cognition. The difference between <answer>the Buddha</answer>'s teaching and the yoga presented in early Brahminic texts is striking. Meditative states alone are not an end, for according to <answer>the Buddha</answer>, even the highest meditative state is not liberating. Instead of attaining a complete cessation of thought, some sort of mental activity must take place: a liberating cognition, based on the practice of mindful awareness.
The most acient yogic ideas is found in the early sermons of who?
the Buddha