Narahari; but it is said here to be of Katurasa instead of Kashaya, as stated in the Nighantus. Likewise Tintrika, rather Danti, as suggested by the Vice-Chancellor, has the same properties that are given to Danti in the Nighantus. In the case of Sringi in sutra 14, the author's indebtedness to Narahari is quite clear from the use of the word "atisara" which is found only in the Rajanighantu, but not in the Dhanvantari Nighantu. Again in the enumeration of the properties of Nili or Nilini in sutra 31, he says that it cures the poison due to worms and is also an antidote to mental disorder (Moha) which is only found in Bhavaprakasa, but not in Dhanvantari or Rajanighantu. Accordingly the ascription of the work to Brahma in the tenth sutra of the first Prasna may be due either to the author's intention to give the work an authoritative origin or to its compilation from some older work ascribed to Brahma. From these considerations it follows that the Ayurvedasutra is a compilation from various medical and Yoga works, of which some are as early as the first century B.C. and a few as late as fifteenth century A.D.
There is however some doubt as to the extent of the work at the time of the compilation. At the end of his commentary on the fifty-first sutra of the fifth Prasna the commentator says that his commentary on each of the sutras of the fifth Prasna, famous, acceptable to the learned, and made in the interests of the world is brought to a close. Then there come two verses one in Sikharini metre and another in Sloka metre in praise of Siva and his spouse Parvati, followed by a phrase meaning that the work has been submitted at the feet of the Lord of all. No such verses appear at the close of other chapters. Nor are there any verses at the beginning of the third and fourth chapters. At the commencement of the first chapter there is a verse in Sloka metre in praise of Vinayaka. In the beginning
