यथा- for instance/ as
खरश्चन्दन- Khara+ Chandana=Donkey+ Sandalwood
भारवाही- Weight bearer
भारस्यवेत्ता-Bharasya+Vetta= Weight's+ knower
न- no/ not
तु- but/ and
चन्दनस्य-sandalwood's/ of sandalwood
एवं- thus, similarly
हि-surely/ for/ because
खरवद्वहन्ति-Kharavat+vahanti=Like Donkey+to carry
As the Donkey is knowing only about the weight of Sandalwood but not about the value of the sandalwood which it is carrying (bearing on its back), similarly having studied a lot of treatise but ignorant of the meaning/sense of the treatise is also as same of the donkey carrying the weight of the sandalwood.
Discussion and Conclusion:
We should be through in all the aspects of the particular disease/ about the Ayurveda or about the shlokas of Ayurveda, but only knowing / byharting the shloka is as same as the Donkey is knowing only about the weight of Sandalwood but not about the value of the sandalwood which it is carrying (bearing on its back).
So we should be through in all the aspects related to our field.