The day the oppressed calls the oppressor to account is harsher than the day the oppressor wronged the oppressed.
يوم المظلوم على الظالم أشد من يوم الظالم على المظلوم
Yawm al-maẓlūmi ʿalā al-ẓālimi ashaddu min yawmi al-ẓālimi ʿalā al-maẓlūm
Ali, Nahj al-Balagha, saying 241 (Subhi Salih edition, p. 511; saying 241 in the Abduh edition). Nahj al-Balagha is a compilation without chains of transmission by al-Sharif al-Radi (d. 1015).
The oppressor has a day.
The day he oppresses.
The oppressed has a day too.
The day he calls to account.
Ali finds the second one harsher.
For oppression lasts a moment,
the reckoning endures.
Let whoever is strong today
not forget tomorrow's scales.