Sunan an-Nasa'i 2726
سنن النسائي#2726SahihImran bin Husain said:"The Messenger of Allah combined Hajj and "Umrah, then he passed away before he could forbid that, and before Qur'an was revealed forbidding it
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih Muslim
In-book reference: 24:108