Text 10

तमुवाच हृषीकेशः प्रहसन्निव भारत ।
सेनयोरुभयोर्मध्ये विषीदन्तमिदं वचः ॥१०॥

tam uvāca hṛṣīkeśaḥ
prahasann iva bhārata
senayor ubhayor madhye
viṣīdantam idaḿ vacaḥ

Translation:

O descendant of Bharata, at that time Krishna, smiling, in the midst of both the armies, spoke the following words to the grief-stricken Arjuna.

Purport:

The talk was going on between intimate friends, namely the Hrishikesa and the Gudakesa. As friends, both of them were on the same level, but one of them voluntarily became a student of the other. Krishna was smiling because a friend had chosen to become a disciple. As Lord of all, He is always in the superior position as the master of everyone, and yet the Lord agrees to be a friend, a son, or a lover for a devotee who wants Him in such a role. But when He was accepted as the master, He at once assumed the role and talked with the disciple like the master -- with gravity, as it is required. It appears that the talk between the master and the disciple was openly exchanged in the presence of both armies so that all were benefitted. So the talks of Bhagavad-gita are not for any particular person, society, or community, but they are for all, and friends or enemies are equally entitled to hear them.