It is narrated from the Mother of the Believers, Sayyidah Aishah (may Allah be pleased with her), that the Messenger of Allah (peace and blessings be upon him) said: "Help your brother, whether he is an oppressor or oppressed; if he is an oppressor, restrain him (from oppression), and if he is oppressed, get him his right."
No one narrated this hadith from Hisham (may Allah have mercy on him) except Isma'il (may Allah have mercy on him) and Ikrimah bin Ibrahim al-Azdi (may Allah have mercy on him).
Hadith Referenceالمعجم الأوسط / باب الألف / 649
Hadith Gradingمحدثین:إسناده ضعيف، فيه رواية إسماعيل بن عياش عن الحجازيين، والمرسل أصح
Hadith Takhrij«قال الهيثمي: رواية إسماعيل بن عياش عن الحجازيين فيها ضعف «مجمع الزوائد ومنبع الفوائد، ج 7، ص 264»» «قال أبو حاتم الرازي: المرسل أصح «علل الحديث، ج 6، ص 219»»