You can serve Kṛṣṇa in any condition of life. But don't be miser. If you think that you have got one crores of rupees, so Kṛṣṇa says vācā. "Let the bank balance remain for my children, and I go to Vṛndāvana and chant Hare Kṛṣṇa." No. That is called vitta-sārtha. If you have got money, you must spend money. Not that "Money is for my children and wife, and I come to Vṛndāvana and chant Hare Kṛṣṇa." There are many such retired persons here. They leave the money for their relatives, and come here with a . . . of course, that is good. But Kṛṣṇa is very intelligent. Kṛṣṇa wants to know where you have kept your money. (laughter) He inquires, "You kept your money for your children and you have come to love Me with your beads." No. (laughter) Kṛṣṇa is very intelligent. Kṛṣṇa wants that, "Whatever you have got, you have to utilize for Me."
Just like Arjuna. Arjuna was a warrior, and he utilized his energy for fighting the demons. Because He came to kill the demons. Paritrāṇāya sādhūnāṁ vināśāya ca duṣkṛtām (BG 4.8). So Kṛṣṇa wants to utilize your energy for His satisfaction. That is devotion. Everyone has got his energy, and he can spare it for Kṛṣṇa's service. That is real devotion.
- prāṇair arthair dhiyā vācā
- śreya-ācaraṇaṁ sadā
- etāvaj janma-sāphalyaṁ
- dehinām iha dehiṣu
- (SB 10.22.35)
If you want to make perfection of your life, then whatever you have got, you have to spend it, spare it for Kṛṣṇa. Not that "The substance is for my relative, and simply I come with lip sympathy."