The Messenger of Allah ﷺ said, "An Umrah performed in Ramadan equals a Hajj."
حدثنا أبو بكر بن أبي شيبة وعلي بن محمد قالا حدثنا وكيع حدثنا سفيان عن بيان وجابر عن الشعبي
قال رسول الله ﷺ عمرة في رمضان تعدل حجة
[Sahih] Ahmad narrated it, 4/177, 186, from Waki with this chain, and Busiri graded it sahih.Thawri used an ambiguous form of transmission (anana), as noted previously, no. 162, and there are many corroborating narrations for this hadith in Bukhari, no. 1782, and Muslim, no. 1256, and others. See also no. 2995.