"Love your beloved moderately, perhaps he becomes hated to you someday. And hate whom you hate moderately, perhaps he becomes your beloved someday." (Using translation from Tirmidhī 1997)
"أحْببْ حبيبكَ هونًا مَا، عَسَى أن يكونَ بغيضَك يومًا مَا، وابغضْ بغيضك هونًا ما عسى أن يكونَ حبيبكَ يومًا مَا".