Sayyiduna Mu'adh bin Jabal (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him) said: "On the Day of Resurrection the believers will be raised without beards or moustaches, their eyes lined with kohl, and their age will be thirty years."
Ahmad recorded this narration and its chain is hasan (good), except that the narrator named Shahr did not meet Sayyiduna Mu'adh bin Jabal (may Allah be pleased with him). (Allamah Haythami says:) I say: Before this, the hadith narrated by Sayyiduna al-Miqdam bin Ma'dikarib (may Allah be pleased with him) has already passed, which is similar to it; it passed in the chapter on how people will be gathered. However, he reported these words: "Their age will be 33 years, their build will be like that of Sayyiduna Adam (peace be upon him), their beauty like that of Sayyiduna Yusuf (peace be upon him), and their heart like that of Sayyiduna Ayyub (peace be upon him)." The chain of this narration is good (jayyid). Before this, the narration of Sayyiduna al-Miqdam bin al-Aswad (may Allah be pleased with him) has also passed, which is on the same theme.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب البعث / 18346
Hadith Gradingمحدثین:إسنادہ حسن
Hadith Takhrij«اخرجه احمد فى المسند (232/5) ، أخرجه مسند أحمد برقم: 21519»