I heard the Messenger of Allah (ﷺ) say, when he was in ‘Aqiq: “Someone came to me from my Lord and said: ‘Pray in this blessed valley and say: (I intend to do) ‘Umrah in Hajj.’”
Sunan Ibn Majah Book 25, Hadith 95
← Previous Hadith “Whoever enters Ihram for Hajj and ‘Umrah, one Tawaf is sufficient for both, and he should not exit Ihram until he has completed his Hajj, when he should exit Ihram for both.”

Sunan Ibn Majah Book 25, Hadith 94 Next Hadith → “The Messenger of Allah (ﷺ) stood up to deliver a speech in this valley, and said: ‘Lo! ‘Umrah has been included in Hajj until the Day of Resurrection.”

Sunan Ibn Majah Book 25, Hadith 96