Sunan an-Nasa'i 3726
سنن النسائي#3726SahihIt was narrated from Tawus that the Messenger of Allah made 'Umra and Ruqba binding
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih Lighairihi
Al-AlbaniSahih
Zubair Ali ZaiSahih
In-book reference: 34:8