CC Ādi 17.9
deśe āgamana punaḥ premera vilāsa
When Śrī Caitanya Mahāprabhu went to Gayā, accompanied by many of His disciples, He became sick on the way. He had such a high fever that He asked His students to bring water that had washed the feet of brāhmaṇas, and when they brought it the Lord drank it and was cured. Therefore everyone should respect the position of a brāhmaṇa, as indicated by Śrī Caitanya Mahāprabhu. Neither the Lord nor His followers displayed any disrespect to brāhmaṇas.
The followers of the Lord must be prepared to offer brāhmaṇas all due respect. But preachers of Lord Caitanya’s cult object if someone presents himself as a brāhmaṇa without having the necessary qualifications. The followers of Lord Caitanya cannot blindly accept that everyone born in a brāhmaṇa family is a brāhmaṇa. Therefore one should not indiscriminately follow the Lord’s example of showing respect to brāhmaṇas by drinking water that has washed their feet. Gradually the brāhmaṇa families have become degraded because of the contamination of Kali-yuga. Thus they misguide people by exploiting their sentiments.