جامع الترمذي

Narrated Anas: that 'Umar bin Al-Khattab [may Allah be pleased with him] said: "I said: 'O Messenger of Allah (ﷺ)! I wish that you could perform Salat behind the Maqam of Ibrahim.' So the following was revealed: And take you the Maqam of Ibrahim as a place of Salat."