Bhagavad Gita 2.10
तमुवाच हृषीकेशः प्रहसन्निव भारत। सेनयोरुभयोर्मध्ये विषीदन्तमिदं वचः।।2.10।।
tamuvāca hṛṣīkeśaḥ prahasanniva bhārata| senayorubhayormadhye viṣīdantamidaṃ vacaḥ||2.10||
tamuvaca hrishikeshah prahasanniva bharata senayorubhayormadhye vishidantamidam vacah2.10
Meaning
Between the two armies, Krishna, with a gentle smile, begins to speak to the grief-stricken Arjuna — the smile indicating that Arjuna's sorrow, though understandable, is based on ignorance.
हे भारत! हृषीकेश ने दोनों सेनाओं के बीच में विषाद करते हुए उस अर्जुन को मुस्कुराते हुए-से यह वचन कहा।
This is verse 10 of 72 in Chapter 2 (Sankhya Yoga) of the Bhagavad Gita.