Sayyiduna Abdullah bin Abbas (may Allah be pleased with them) narrates: Sayyidah Umm Sulaym (may Allah be pleased with her) came to the service of the Prophet Muhammad (peace be upon him). She said: Sayyiduna Abu Talhah (may Allah be pleased with him) and his son have gone for Hajj and have left me behind, so the Prophet Muhammad (peace be upon him) said: O Umm Sulaym! Performing Umrah in Ramadan is equal to performing Hajj.