Riyad as-Salihin, Book 11, Hadith 1278 (In-Book) ⓘ
Ibn 'Abbas (May Allah be pleased with them) reported: The Prophet said, "(The performance of) 'Umrah during Ramadan is equal to Hajj (pilgrimage)." Or said, "Equal to the performance of Hajj with me."[Al-Bukhari and Muslim].
وعن ابن عباس رضي الله عنهما، أن النبي صلى الله عليه وسلم قال: "عمرة في رمضان تعدل عمرة أو حجة معي" . ((متفق عليه))