Sunan Abi Dawud 1472
سنن أبي داود#1472SahihWaki' and Ibn 'Uyainah said (explaining the meaning of taghanni):This means that the Qur'an makes a man neglect all other things, and be content with it
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih Maqtu
Muhammad Muhyi Al-Din Abdul HamidSahih Maqtu
Zubair Ali ZaiIsnaad Sahih
In-book reference: 8:57