Sunan Abi Dawud 4980
سنن أبي داود#4980SahihNarrated Hudhayfah: The Prophet (ﷺ) said: Do not say: "What Allah wills and so and so wills," but say: "What Allah wills and afterwards so and so wills
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiIsnaad Sahih
In-book reference: 43:208