Bhagavad Gita 12.4

Subduing their senses, viewing all conditions of life with an equal eye, and working for the welfare of all beings, they assuredly come to Me.

संनियम्येन्द्रियग्रामं सर्वत्र समबुद्धयः।ते प्राप्नुवन्ति मामेव सर्वभूतहिते रताः॥

saṃniyamyendriyagrāmaṃ sarvatra samabuddhayaḥ|te prāpnuvanti māmeva sarvabhūtahite ratāḥ||

English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).