Sunan an-Nasa'i 3725
سنن النسائي#3725SahihIt was narrated from Ibn 'Abbas that the Prophet said:"Indeed 'Umra is permissible
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
In-book reference: 34:7