Sayyidah Umm Salamah (may Allah be pleased with her) said: I heard the Messenger of Allah (peace and blessings be upon him) saying: "Whoever says the talbiyah for Hajj or Umrah from al-Masjid al-Aqsa to al-Masjid al-Haram, his past and future sins will be forgiven, or Paradise becomes obligatory for him." (The narrator Abdullah was unsure which of the two he said.)
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 8926
Nafi' (may Allah have mercy on him) said that Ibn Umar (may Allah be pleased with them both) entered ihram from Iliya' (Jerusalem) in the year of the two arbiters.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 8927