It is narrated from Hazrat Ma'qil (may Allah be pleased with him) that once my mother intended to perform Hajj, but her camel was very weak. When this matter was mentioned to the Prophet (peace and blessings be upon him), he said: Perform Umrah in Ramadan, for performing Umrah in Ramadan is like Hajj.
Hadith Referenceمسند احمد / من مسند القبائل / 27288
Hadith Gradingحکم دارالسلام:قوله : عمرة فى رمضان تعدل حجة صحيح لغيره، وهذا إسناد مختلف فيه ألوانا