Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) narrates: The Prophet (peace and blessings be upon him) said: "The most excellent Hajj is 'ajj and thajj." (Perhaps the narrator says:) By 'ajj is meant reciting the talbiyah, and by thajj is meant slaughtering the sacrificial animals.
Abu Ya'la recorded it, and it contains a weak man.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الحج / 5378