Riyad as-SalihinChapter 11Hadith 621
Full Sharh — Riyad as-Salihin 621
وعنه أن رسول الله صلى الله عليه وسلم قال: "إن في الجنة مائة درجة أعدها للمجاهدين في سبيل الله ما بين الدرجتين كما بين السماء والأرض" ((رواه البخاري)).
English Translation
Abu Hurairah (May Allah be pleased with him) reported:: The Messenger of Allah (ﷺ) said, "In Jannah there are a hundred grades which Allah has prepared for those who fight in His Cause; and the distance between any two of those grades is like the distance between the heaven and the earth.".
Source
Riyad as-Salihin(رياض الصالحين)
The Book of Jihad
Hadith Number
621