A kind of lax Śramaṇa (ascetic);
1.That ascetic, who holds irrational idea, which cannot be proved through reasoning.
yuktikadambakād bahistiṣthantīti pārśvasthāḥ.
(Sūtra 1.1.32 Vṛ Pa 33)
2.That ascetic, who considers that any performance related with next life (reincarnation) is worthless.
paralokakriyāpārśvasthā vā niyatipakṣasamāśrayaṇāt paralokakriyāvaiyarthyam.
(Sūtra 1 Vṛ Pa 33)
3.That ascetic, who, inspite of not having any illness, accepts (and consumes) food etc. attended with the blemishes such as Śayyātarapiṇḍa (to accept bhikṣā (accepting food etc. by going to houses for collecting them in conformity with the canonical instruction) from the house of the Śayyātara (donor of the sojourning place to the ascetic)), Abhyāhṛtapiṇḍa (that bhikṣā which is brought specially for the ascetic), Rājapiṇḍa (bhikṣā from the royal family) etc...
pārśvasthaḥ sa yaḥ kāraṇaṃ tathāvidhamantareṇa śayyātarābhyāhṛtaṃ nṛpatipiṇḍaṃ naityikamagrapiṇḍaḥ vā bhuṅkte.
(PrasāVṛ Pa 25)