It wasnarrated from Wahb bin Khanbash that the Messenger of Allah(ﷺ)said:
" 'Umrah during Ramadan is equivalent to Hajj (i.e. inreward)." (ES)
English reference (ES): Vol. 4, Book 25, Hadith 2991 (ES)
Arabic reference (ES): Book 25, Hadith 3105 (ES)