Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) narrates: The Prophet (peace and blessings be upon him) said: "None of you should ever stand in a place where a man is being killed unjustly, for the curse descends upon those present there, since they did not defend him. And none of you should ever stand in a place where a man is being beaten unjustly, for the curse descends upon those present there when they did not defend him."
Al-Tabarani recorded it. Its chain contains Asad bin Ata', about whom al-Azdi said: he is majhul (unknown); and it contains Mindal, whom Abu Hatim and others declared thiqah (trustworthy), while Ahmad and others declared him da'if (weak). The rest of its narrators are thiqat (trustworthy).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الديات / 10710
Hadith Gradingمحدثین:إسنادہ ضعیف
Hadith Takhrij«اخرجه الطبراني فى المعجم الكبير (11675) ، أخرجه المعجم الكبير للطبراني برقم: 11675»