Aware of the constraints of not straying outside the texts and syllabi, let me mention for the sake of discussion that later day philosophical formulations contain many ingenious notions like Sanghita or Loka-Sangraha to predicate emancipation. The problem of rebirth itself undergoes substantial transformation in the hands of Sri Aurobindo and hence antiquity of sources shouldn’t be the only criteria for ontological veracity. [TNM55]