´It was narrated that Ibn 'Abbas said:` "I heard 'Umar say" 'By Allah, I forbid you to forbid you to perform Tamattur,' but it is mentioned in the Book of Allah and the Messenger of Allah did it" meaning 'Umrah with Hajj.
Hadith ReferenceSunan an-Nasa'i / The Book of Hajj / Hadith: 2737
Hadith Gradingالألبانی:صحيح الإسناد | زبیر علی زئی:إسناده صحيح