Sunan Ibn Majah
3002
Daif+3

It was narrated from Umm Salamah, the wife of the Prophet (ﷺ), that the Messenger of Allah (ﷺ) said:“Whoever begins the Talbiyah for ‘Umrah from Baitul-Maqdis, that will be an expiation for all his previous sins.” She said: “So I went out.” Meaning, from Baitul-Maqdis for ‘Umrah

DaifAl-Albani
DaifMuhammad Fouad Abd al-Baqi