Again, there is yet another verse, preserved by tradition, which refers to Patañjali as having expelled the mental, verbal and physical impurities of man by means of Yoga, Vyākaraṇa and Vaidya, and hails him as the expounder of these three Sāstras that make for trikaraṇaśuddhi. The verse in question runs thus-
योगेन चित्तस्य, पदेन वाचां, मलं शरीरस्य च वैद्यकेन ।
योऽपाकरोत् तं प्रवरं मुनीनां पतञ्जलिं प्राञ्जलिरानतोऽस्मि ॥
That Patañjali was a reputed author of standing in the three fields of Grammar, Yoga and Medicine is amply confirmed by Bhojadeva, in his vṛtti on the Yogasūtra of Patañjali. In one of the prefatory verses of this vṛtti he has an autobiographical reference, where he has compared himself to Patañjali-- whom, perhaps, he idolised-- in respect of having composed three different works in the three forementioned Śāstras for the purification of the malatraya.
- "वाक्-चेतोवपुषां मलः फणभृतां भर्त्रेव येनोद्धृतः ॥"
And these classics of Patañjali in the three different Śāstras are actually referred to by name by Cakrapāṇidatta in his commentary on the Carakasaṁhitā, in a laudatory verse on Patañjali, whom he eulogises as the author of the Yogasūtra, the Mahabhāṣya and the Carakapratisaṁskṛta, echoing the idea of the removal of the three impurities.
- "पातञ्जलमहाभाष्यचरकप्रतिसंस्कृतैः ।
- मनोवाक्कायदोषाणां हर्त्रेऽहिपतये नमः ॥"
It may not be out of place to add a note of explanation On this verse. The science of medicine propounded by sage Agniveśa, disciple of Bhagāvan Ātreya, is referred to as Carakapratisaṁskṛta, because the mutilated science was renovated by Patañjali, under the assumed name of Caraka. The unqualified word Pātañjala refers to the Yogasūtra: That such a mode of referring to the Yogasūtra is not quite unfamiliar is clear from the evidence of Bhoja, who uses this unqualified appellation to refer to the Yogasūtra, in one of the prefatory verses of the vṛtti.
- "शब्दानमनुशासनं विदधता पातञ्जले कुर्वता ।
- वृत्तिं राजमृगाङ्कसंज्ञकमपि व्यातन्वता वैदिके ॥"
- "शब्दानमनुशासनं विदधता पातञ्जले कुर्वता ।
