Verse 125

समः शत्रौ च मित्रे च समो मानावमानयोः ॥ब्रह्मणः परिपूर्णत्वात् इति ज्ञात्वा सुखी भवेत्

In plain words

“The same towards enemy and friend, the same in honour and dishonour, for is complete fullness”: knowing this, you become joyful.