In one narration the wording is: "When the believers are raised on the Day of Resurrection, there will be no hair on their bodies, their eyes will be adorned with kohl, and they will be thirty years of age." Ahmad recorded all these narrations, and the chain of the first narration is hasan (good) and muttasil (connected).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب أهل الجنة / 18656
Hadith Gradingمحدثین:إسناد الرواية الأولى حسن متصل