Manava Dharmashastra 6.67

6.67

kaluṣitamudakaṃ katakavṛkṣaphale nikṣipte prasīdati svacchaśuddharūpatāmāpadyate | kiṃtu na tasya phalasya nāmagrahaṇena tannirmalībhavati, api tvanuṣṭhānamapekṣate | evaṃ liṅgadhāraṇaṃ phalanāmasthānīyam | na tāvanmātrātsiddhiryāvaddekārāmatopāsanasarvasamatādidharmo nānuṣṭhitaḥ | pūrvaśeṣorthavādaḥ |

Though the fruit of the Kataka tree clarifies water, yet water does not become clear by the mere mention of its name.—(67)

Medhātithi’s commentary (manubhāṣya):
When the fruit of the kataka tree is put in dirty water, the water becomes clarified, takes the clear form. But it does not become clear by the mere mention of the name of that fruit; it needs action. Similarly, the wearing of external marks is like the pronouncing of the name of the fruit; and success is attained, not by that wearing alone, but by the due fulfilment of such duties as ‘resting in solitude’, ‘meditation’, ‘equal-mindedness towards all beings’ and so forth.

This verse is a laudatory supplement to what has gone before.—(67)

Comparative notes by various authors
(verses 6.66-67)
See Comparative notes for Verse 6.66.