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."

[Al-Bukhari].

وعنه أن رسول الله ﷺ قال: "إن في الجنة مائة درجة أعدها للمجاهدين في سبيل الله ما بين الدرجتين كما بين السماء والأرض" ((رواه البخاري)).