It is narrated from Sayyiduna Sahl that the Prophet (peace and blessings be upon him) said: Whoever comes to the Quba Mosque and offers two rak‘ahs there, it is equal to performing one ‘Umrah.
Hadith Referenceمسند احمد / مسند المكيين / 15981
Hadith Gradingحکم دارالسلام:صحيح بشواهده، وهذا إسناد حسن