Sunan an-Nasa'i 4707
سنن النسائي#4707SahihAbu Salamah and Sulaiman bin Yasar narrated from one of the Companions of the Messenger of Allah, one of the Ansar, that:the Messenger or Allah approved of Qasamah as it had been during the Jahiliyyah
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih Isnaad
Al-AlbaniSahih Isnaad
Zubair Ali ZaiSahih Muslim
In-book reference: 45:2