question #1 Sahih al-Bukhari 1782, Book 26, Hadith 9 : What is the significance of performing Umra during Ramadan in terms of reward?

I heard Ibn `Abbas saying, “Allah’s Messenger (ﷺ) asked an Ansari woman (Ibn `Abbas named her but `Ata’
forgot her name), ‘What prevented you from performing Hajj with us?’ She replied, ‘We have a camel
and the father of so-and-so and his son (i.e. her husband and her son) rode it and left one camel for us
to use for irrigation.’ He said (to her), ‘Perform `Umra when Ramadan comes, for `Umra in Ramadan
is equal to Hajj (in reward),’ or said something similar.”