The works of Ādi Śaṅkarācārya

Aparokṣānubhūtiḥ

Verse 109

इति वा तद्भवेन्मौनं सतां सहजसंज्ञितम् ।गिरां मौनं तु बालानां प्रयुक्तं ब्रह्मवादिभिः ॥ १०९ ॥

In plain words

Or rather — that is the silence of the wise, the one they call sahaja, natural, the silence nobody has to hold. The silence of the tongue is another thing: the teachers of Brahman prescribe that one for beginners.

Close to the Sanskrit

Thus indeed that would be the silence of the wise, the one designated as sahaja, natural; but the silence of words is prescribed for children by the expounders of Brahman.