One verse

Srimad Bhagavatam 10.24.5

10.24.5

उदासीनोऽरिवद् वर्ज्य आत्मवत् सुहृदुच्यते ॥ ५ ॥

udāsīno ’ri-vad varjya ātma-vat suhṛd ucyate

udāsīnaḥ
one who is indifferent
ari-vat
just like an enemy
varjyaḥ
is to be avoided
ātma-vat
like one’s own self
suhṛt
a friend
ucyate
is said to be

One who is neutral may be avoided like an enemy, but a friend should be considered like one’s own self.