(49) باب الْقِرَانِ .
It was narrated from 'Imran:
That the Messenger of Allah combined Hajj and "Umrah, then no Qur'an was revealed concerning that, and the Prophet did not forbid it, regardless of what one man may say.
Reference: Sunan an-Nasa'i 2727
In-book reference: Book 24, Hadith 0
English translation: Vol. 3, Book 24, Hadith 2728