CC Ādi 17.155
taiche āmāra śāstra — ketāva ‘korāṇa’
The Kazi replied, “As You have Your scriptures called the Vedas and Purāṇas, we have our scripture, known as the holy Koran.
Chand Kazi agreed to talk with Śrī Caitanya Mahāprabhu 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 Śrī Caitanya Mahāprabhu raised the question of the Muslims’ cow-killing and bull-killing, Chand Kazi came to the standard of understanding from his scriptures.