The glory of Ashtanga Hridayam:
etat-paṭhan sangrahabodha-śaktaḥ svabhyasta-karmā bhiṣag-aprakampyaḥ
ākampayaty-anya-viśāla-tantra-kṛtābhiyogān yadi tanna citram (AH. Ut. 40.83)
By studying this text (Aṣtāṅga Hṛdayam) one can understand the sangraha and become expert in his work as a physician. It is not amazing if such a person makes others who have studied bigger texts tremble (in a debate).