SB 6.3.29

jihvā na vakti bhagavad-guṇa-nāmadheyaṁ
 cetaś ca na smarati tac-caraṇāravindam
kṛṣṇāya no namati yac-chira ekadāpi
 tān ānayadhvam asato ’kṛta-viṣṇu-kṛtyān
Synonyms: 
jihvā — the tongue; na — not; vakti — chants; bhagavat — of the Supreme Personality of Godhead; guṇa — transcendental qualities; nāma — and the holy name; dheyam — imparting; cetaḥ — the heart; ca — also; na — not; smarati — remembers; tat — His; caraṇa-aravindam — lotus feet; kṛṣṇāya — unto Lord Kṛṣṇa through His Deity in the temple; no — not; namati — bows; yat — whose; śiraḥ — head; ekadā api — even once; tān — them; ānayadhvam — bring before me; asataḥ — the nondevotees; akṛta — not performing; viṣṇu-kṛtyān — duties toward Lord Viṣṇu.
Translation: 
My dear servants, please bring to me only those sinful persons who do not use their tongues to chant the holy name and qualities of Kṛṣṇa, whose hearts do not remember the lotus feet of Kṛṣṇa even once, and whose heads do not bow down even once before Lord Kṛṣṇa. Send me those who do not perform their duties toward Viṣṇu, which are the only duties in human life. Please bring me all such fools and rascals.
Purport: 

The word viṣṇu-kṛtyān is very important in this verse because the purpose of human life is to please Lord Viṣṇu. Varṇāśrama-dharma is also meant for that purpose. As stated in the Viṣṇu Purāṇa (3.8.9):

varṇāśramācāravatā
 puruṣeṇa paraḥ pumān
viṣṇur ārādhyate panthā
 nānyat tat-toṣa-kāraṇam

Human society is meant to follow strictly the varṇāśrama-dharma, which divides society into four social divisions (brāhmaṇa, kṣatriya, vaiśya and śūdra) and four spiritual divisions (brahmacarya, gṛhastha, vānaprastha and sannyāsa). Varṇāśrama-dharma easily brings one nearer to Lord Viṣṇu, who is the only true objective in human society. Na te viduḥ svārtha-gatiṁ hi viṣṇum: unfortunately, however, people do not know that their self-interest is to return home, back to Godhead, or to approach Lord Viṣṇu. Durāśayā ye bahir-artha-māninaḥ: instead, they are simply bewildered. Every human being is expected to perform duties meant for approaching Lord Viṣṇu. Therefore Yamarāja advises the Yamadūtas to bring him those persons who have forgotten their duties toward Viṣṇu (akṛta-viṣṇu-kṛtyān). One who does not chant the holy name of Viṣṇu (Kṛṣṇa), who does not bow down to the Deity of Viṣṇu, and who does not remember the lotus feet of Viṣṇu is punishable by Yamarāja. In summary, all avaiṣṇavas, persons unconcerned with Lord Viṣṇu, are punishable by Yamarāja.