नापृष्टः कस्यचिद्ब्रूयान्न चान्यायेन पृच्छतः ।
जानन्नपि हि मेधावी जडवल्लोक आचरेत् ॥
nāpṛṣṭaḥ kasyacid brūyān na cānyāyena pṛcchataḥ |
jānann api hi medhāvī jaḍaval loka ācaret ||
(Manu Smṛti: 2.110)
“Unless asked, do not speak to anyone, and do not speak to someone who asks improperly. Even while knowing, an intelligent person should act like a dullard [when it is unbefitting to disclose one’s knowledge].”