Abu Sa'id Al-Khudri (May Allah be pleased with him) reported:
The Messenger of Allah ﷺ said, "If anyone is pleased with Allah as his Rubb, with Islam as his religion and with Muhammad ﷺ as (Allah's) Messenger, surely, he will be entitled to enter Jannah." Abu Sa'id was delighted with this and requested the Messenger of Allah ﷺ to repeat it. He ﷺ repeated it again and then said, "There is also another act by which Allah will elevate the position of a (pious believing) slave in Jannah to a grade one hundred degrees higher. And the distance between any two grades is equal to the distance between heaven and earth." He asked the Messenger of Allah ﷺ what it was and he ﷺ replied, "Jihad in the way of Allah; Jihad in the way of Allah."

[Muslim].

وعن أبي سعيد الخدري رضي الله عنه أن رسول الله ﷺ قال: "من رضي بالله ربًا وبالإسلام دينًا، وبمحمد رسولا وجبت له الجنة" فعجب لها أبو سعيد فقال أعدها علي يا رسول الله فأعادها عليه ثم قال: "وأخرى يرفع الله بها العبد مائة درجة في الجنة، ما بين كل درجتين، كما بين السماء والأرض" قال: وما هي يا رسول الله؟ قال: "الجهاد في سبيل الله، الجهاد في سبيل الله" ((رواه مسلم)).