The Bhikṣuṇī Maṇimēkhalai

104 - The Philosophical Systems
Maṇimēkhalai knows of the Mīmāṁsa only as a single system and it
does not know of it as two separate systems, as it had come to be
recognized later.
One point before passing out of this discussion, and that is, that the six
systems, as current at the time, are recited in the Maṇimēkhalai as
Lōkāyata, Bauddha, Sāṁkhya, Naiyāyika, Vaiśēṣika and Mīmāṁsa.
There are several points to note in regard to this list of six.
The orthodox systems accepted nowadays consist of three pairs;
Vaiśēṣika and Nyāya, Sāṁkhya and Yōga, and the two Mīmāṁsas,
Pūrva and Uttara. These are the accepted Vaidika systems. The
Maṇimēkhalai recital differs in the following particulars. Mīmāṁsa
is still treated as one; that means that the work must have been
ṭi and the Upavarṣa
commentaries were holding the field, and the division of [68]
Dēvasvāmin had not come into existence.
The Maṇimēkhalai includes Lōkāyatam and Bauddham among the
Vaidika systems. It has not treated of Lōkāyata in this chapter unless
we take Lōkāyata and Bhūtavāda as synonymous as indicated in the
text, the latter including the former. It would seem strange that the
Bauddha religion should be included among the systems to which the
Vaidika pramāṇas applied. 66 But it is so stated here. The various
systems quoted in a commentary on the Vijñānamātra Śāstra later
66 According to Mahāmahopādhyaya Haraprasad Śāstri all early Buddhists
from Buddha to Vasubandhu were indebted to Akṣapāda for their
pramāṇas, or instruments of right knowledge.