Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him) said: "On the Day of Resurrection, the most severely punished of the people of Hell will be the one who killed a Prophet, or whom a Prophet killed, or one who was an unjust ruler (in the world)."
(Allamah al-Haythami says:) I say: Part of it is in the Sahih.
Al-Tabarani recorded it; its chain contains Layth bin Abi Sulaym, who is a mudallis, and the rest of its narrators are thiqat (trustworthy).
Al-Bazzar recorded it, except that he reported the words: "a ruler of misguidance," and his narrators are also thiqat (trustworthy). Ahmad recorded it similarly.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الخلافة / 9198
Hadith Gradingمحدثین:إسنادہ صحیح
Hadith Takhrij«اخرجه البزار فى المسند (1603) اخرجه الطبراني فى المعجم الكبير (10515) اخرجه احمد فى المسند (3868) ، أخرجه مسند أحمد برقم: 3858، وأخرجه مصنف عبد الرزاق برقم: 19487، وأخرجه المعجم الكبير للطبراني برقم: 10515»