One day Drona went forth with the princes to hunt in the Bhil kingdom. Their dog ran through the woods, and it beheld the dark son of the rajah of the Bhils and barked at him. Desiring to display his skill, the young man shot seven arrows into the dog's mouth ere it could be closed, and, moaning and bleeding, the animal returned thus to the princes.
Wondering greatly, the princes searched for the greatly-skilled archer, and found him busy with his bow. They spoke, saying: “Who art thou?” And the Bhil made answer: “I am a pupil of Drona.”
When Drona was brought to the place, the young man kissed his feet.
Said the wise preceptor: “If thou art my pupil, I must receive my reward.”
The young man made answer: “Command me, and I will give thee whatsoever thou dost desire.”
Said Drona: “I should like to have the thumb of thy right hand.”
The faithful prince of the Bhils did not hesitate to obey his preceptor; with a cheerful face he severed his thumb from his right hand and gave it to Drona.
After his wound had healed, the young man began to draw his bow with his middle fingers, but found that he had lost his surpassing skill, whereat Arjuna was made happy.
All the other Bhil warriors who trained in archery followed the prince's example and drew the bow with their middle fingers, and this custom prevailed ever afterwards amongst the tribe.
Now when all the Hastinapur princes had become expert warriors, Drona addressed the blind king, as he sat among his counsellors, and said: “O mighty rajah, thy sons and the sons of thy brother Pandu have now attained surpassing skill in arms, and they are fit to enter the battlefield.”