Abu Hurairah (May Allah be pleased with him) reported:
The Messenger of Allah ﷺ said, "(The performance of) 'Umrah is an expiation for the sins committed between it and the previous 'Umrah; and the reward of Hajj Mabrur (i.e., one accepted) is nothing but Jannah."

[Al-Bukhari and Muslim].

وعنه أن رسول الله ﷺ قال: "العمرة إلى العمرة كفارة لما بينهما، والحج المبرور ليس له جزاء إلا الجنة" ((متفق عليه))