Dhammapada · Verse 210

Pali

Mā piyehi samāgañchi,
appiyehi kudācanaṁ;
Piyānaṁ adassanaṁ dukkhaṁ,
appiyānañca dassanaṁ.

English

Don’t ever get too close
to those you like or dislike.
For not seeing the liked is suffering,
and so is seeing the disliked.

License: English CC0 (Bhikkhu Sujato); Pali public domain. Source: SuttaCentral (sc-data).