According to Wynne, the attainment of the formless meditative absorption was incorporated from Brahmanical practices, while the stratification of particular "samādhi" experiences into the four "jhānas" seems to be a Buddhist innovation.
According to Wynne, the attainment of the formless meditative absorption was incorporated from Brahmanical practices, These practices were paired to mindfulness and insight, and given a new interpretation. The stratification of particular "samādhi" experiences into the four "jhānas" seems to be a Buddhist innovation.