Abu Sa'id Al-Khudri (May Allah be pleased with him) reported:
The Messenger of Allah (ﷺ) said, "A believer never satisfies doing good until he reaches Jannah."[At- Tirmidhi]. (ES)
App reference (ES): Book 13, Hadith 11 (ES)
Arabic/English book reference (ES): Book 13, Hadith 1386 (ES)