In other place, in the Fifteenth Chapter also, Kṛṣṇa said, sarvasya cāhaṁ hṛdi sanniviṣṭo mattaḥ smṛtir jñānam apohanaṁ ca, vedaiś ca sarvair aham eva vedyaḥ (BG 15.15). Kṛṣṇa is within everyone's heart, sarvasya ca ahaṁ hṛdi. This place, the particular place is also mentioned there, hṛdi, in the heart, He's there. Sanniviṣṭaḥ. And from Him, mattaḥ smṛtir jñānam apohanaṁ ca. From Him, our remembrance, smṛtir; jñānam, knowledge; and forgetfulness—everything is coming from Him. Mattaḥ smṛtir jñānam apohanaṁ ca. Therefore, vedaiś ca sarvair aham eva vedyaḥ. One has to understand Kṛṣṇa by studying Vedic literature. If he's missing Kṛṣṇa, then śrama eva hi kevalam. He's missing Kṛṣṇa. That is stated in the Śrīmad-Bhāgavatam:
- dharmaḥ svanuṣṭhitaḥ puṁsāṁ
- viṣvaksena-kathāsu yaḥ
- notpādayed ratiṁ yadi
- śrama eva hi kevalam
- (SB 1.2.8)
Everyone has got particular type of occupational duty. That is called dharma. dharma is not a faith. The particular duty . . . just like you are a medical practitioner. So your dharma is to treat patients. That is your dharma. So everyone has got particular occupational duty. (break) Actually, what is going on as Hindu dharma . . . actually, Hindu dharma, this word is not there in the śāstras. In the śāstra it is called varṇāśrama-dharma, four varṇas: brāhmaṇa, kṣatriya, vaiśya, śūdra; and four āśramas: brahmacārī, gṛhastha, vānaprastha and sannyāsa. These are called varṇāśrama-dharma.
So in every varṇa . . . brāhmaṇa, his qualification is described in the śāstra: śamo damas titikṣā ārjavaṁ kṣāntir jñānaṁ vijñānam āstikyaṁ brahma-karma svabhāva-jam (BG 18.42). Similarly, kṣatriya, vaiśya. So by discharging one's occupational duty according to varṇa and āśrama, if one does not understand Kṛṣṇa, the Bhāgavata says, śrama eva hi kevalam: then he's simply spoiling his time and wasting his labor. That's all.