Chapter 2: Sloka 46

2.46

yāvān artha udapāne
sarvataḥ samplutodake
tāvān sarveṣu vedeṣu
brāhmaṇasya vijānataḥ

yāvān—all that; arthaḥ—is meant; udapāne—in a well of water; sarvataḥ—in all respects; sampluta-udake—in a great reservoir of water; tāvān—similarly; sarveṣu—in all; vedeṣu—Vedic literatures; brāhmaṇasya—of the man who knows the Supreme Brahman; vijānataḥ—of one who is in complete knowledge.

All purposes that are served by the small pond can at once be served by the great reservoirs of water. Similarly, all the purposes of the Vedas can be served to one who knows the purpose behind them.