The Messenger of Allah ﷺ said, "An Umrah performed in Ramadan equals a Hajj."
حدثنا محمد بن الصباح حدثنا سفيان ح و حدثنا علي بن محمد وعمرو بن عبد الله قالا حدثنا وكيع جميعا عن داود بن يزيد الزعافري عن الشعبي
قال رسول الله ﷺ عمرة في رمضان تعدل حجة
[Sahih] Ahmad narrated it: 4/177, from the hadith of Dawud, as related, and Busiri said, "This isnad is daif due to the weakness of Dawud bin Yazid bin Abdul-Rahman Zaafari, but the preceding hadith serves as a corroborating witness for it."