श्रवणायापि बहुभिर्यो न लभ्यः
शृण्वन्तोऽपि बहवो यं न विद्युः ।
आश्चर्योऽस्य वक्ता कुशलोऽस्य लब्धा
आश्चर्यो ज्ञाता कुशलानुशिष्टः ॥
śravaṇāyāpi bahubhir yo na labhyaḥ
śṛṇvanto’pi bahavo yaṁ na vidyuḥ |
āścaryo’sya vaktā kuśalo’sya labdhā
āścaryo jñātā kuśalānuśiṣṭaḥ ||
(Kaṭha Upaniṣad: 1.2.7)
“He whom many are not even able to hear about and whom even many who hear about do not understand—rare is the qualified teacher of him, and rare is the qualified disciple who comes to know and realize him.”