treat friends and foes equally; equal kindness to all
Buddhist yojijukugo expressing the ideal of impartial compassion, extending the same care to both those who are close and those who have caused harm.
Treating everyone with equal kindness, regardless of whether they are friend or foe, is one of the ideals of Buddhism.
A yojijukugo composed of 怨 (resentment, foe), 親 (intimacy, friend), 平等 (equality). The exact historical derivation is uncertain, but it is a set phrase in Buddhist contexts.