112
Šriji Caitanva-caritāmrta
[[Madhya-lilā Ch 8]
sva- karma-nirataḥ siddhim i vathā vindati tac chrnu
yataḥ pravṛttir bhūtānāṁ yena sarvam idaṁ tatam sva-karmaṇā tam abhyarcya siddhiṁ vindati mānavah
Human society should be divided into four divisions— brāhmaṇa ,  kṣatriya ,  vaiśya  and  śūdra —and everyone should always engage in his occupational duty. The Lord says that those engaged in their occupational duty can attain perfection simply by rendering loving devotional service to the Lord while executing their particular duty. Actually the modern ideal of a classless society can be introduced only by Kṛṣṇa consciousness. Let men perform their occupational duty, and let them give their profits to the service of the Lord. In other words, one can attain the perfection of life by discharging one's occupational duty and employing the results in the service of the Lord. This method is confirmed by great personalities like Bodhāyana, Taṅka, Dramiḍa, Guhadeva, Kapardi and Bhāruci. It is also confirmed by  Vedānta-sūtra .
TEXT 58
বর্ণাশ্রমাচারবতা পুরুষেণ পর: পুমান্ । বিষ্ণুরারাধ্যতে পন্থা নান্যত্ততোষকারণম্ ॥ ৫৮ ॥
varņāśramācāravatā purușeņa paraḥ pumān vișņur ārādhyate panthā nānyat tat-toșa-kāraņam
SYNONYMS
varṇa-āśrama-ācāravatā —who behaves according to the system of four divisions of social order and four divisions of spiritual life;  puruṣeṇa —by a man;  paraḥ —the supreme;  pumān —person;  viṣṇuḥ —Lord Viṣṇu;  ārādhyate —is worshiped;  panthā —way;  na —not;  anyat —another;  tat-toṣa-kāraṇam —cause of satisfying the Lord.
TRANSLATION
“The Supreme Personality of Godhead, Lord Viṣṇu, is worshiped by the proper execution of prescribed duties in the system of varṇa and āśrama. There is no other way to satisfy the Supreme Personality of Godhead. One must be situated in the institution of the four varṇas and āśramas.”