Sayyiduna Jabir (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him) said: "Keep performing Hajj and Umrah constantly; the two of them remove poverty and sins just as the furnace removes the dross (that is, the rust) of iron."
Imam al-Tabarani recorded this narration in al-Mu'jam al-Awsat; its chain contains a narrator, Abdullah bin Muhammad bin Aqil, about whom there has been criticism; in spite of that, the hadith he narrates is hasan (good).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الحج / 5657