«لينصرن الرجل أخاه ظالما أو مظلوما إن كان ظالما فلينهه فإنه له نصرة وإن كان مظلوما فلينصره»
The Prophet (peace and blessings be upon him) said:
"A man should help his brother whether he is an oppressor or oppressed. If he is an oppressor, he should stop him from oppression, for that is his help; and if he is oppressed, he should help him."
Hadith Referenceصحیح الجامع الصغیر / حرف اللام / 5483