One who is fully satisfied in knowledge obtained and practically applied in life, who is always determined and fixed in his spiritual position, who completely controls his senses, stones and gold on the same level is understood to be a perfect yogi

Expressions researched:
"The humble sages, by virtue of true knowledge, see with equal vision a learned and gentle brāhmaṇa, a cow, an elephant, a dog and a dog-eater"

Sri Caitanya-caritamrta

CC Antya-lila

One who is fully satisfied in knowledge obtained and practically applied in life, who is always determined and fixed in his spiritual position, who completely controls his senses, and who sees pebbles, stones and gold on the same level is understood to be a perfect yogī.

CC Antya 4.178, Translation and Purport

One who is fully satisfied in knowledge obtained and practically applied in life, who is always determined and fixed in his spiritual position, who completely controls his senses, and who sees pebbles, stones and gold on the same level is understood to be a perfect yogī.

This is also a quotation from the Bhagavad-gītā (BG 6.8).