مُسْنَدُ أَحْمَدَ
Musnad Ahmad 1818
Musnad of al-Fadl bin 'Abbas & narrating from the Prophet
"Amr bin Deenar narrated that Ibn "Abbas used to narrate that al-Fadl bin ‘Abbas told him that he entered the House with the Prophet (ﷺ) and the Prophet (ﷺ) did not pray inside the House when he entered it, but when he came out, he went down and prayed two rak"ahs at the door of the House.
Musnad Ahmad 1819Sahih (Darussalam) []