Sunan an-Nasa'i 4177
سنن النسائي#4177SahihJarir said:"I came to the Prophet when he was accepting (the people's) pledge, and said: 'O Messenger of Allah, extend you hand so that I may give you my pledge, and state your terms, for you know best.' He said: 'I accept you pledge that you will worship Allah, establish Salah, pay the Zakah, be sincere toward the Muslims, and forsake the idolaters
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 ZaiHasan
In-book reference: 39:29