kaji kahe,--tomara yaiche veda-purana
taiche amara sastra--ketava 'korana'
kaji kahe—the Kazi replied; tomara—Your; yaiche—as much as; veda-purana—the Vedas and Puranas; taiche—similarly; amara—our; sastra—scripture; ketava—the holy book; korana—the Koran.
The Kazi replied, "As You have Your scriptures called the Vedas and Puranas, we have our scripture, known as the holy Koran.
Chand Kazi agreed to talk with Sri Caitanya Mahaprabhu on the strength of the scriptures. According to the Vedic scripture, if one can support his position by quoting from the Vedas, his argument is perfect. Similarly, when the Muslims support their position with quotations from the Koran, their arguments are also authorized. When Lord Sri Caitanya Mahaprabhu raised the question of the Muslims' cow-killing and bull-killing, Chand Kazi came to the standard of understanding from his scriptures.
Link to this page: https://prabhupadabooks.com/cc/adi/17/155