Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page History of the Quran:

"

In one of the hadith Muhammad is recorded as saying: "I leave among you two things of high estimation: the Book of God and my Family."[4] Some scholars argue that this provides evidence that the Quran had been collected and written during this time because it is not correct to call something al-kitab (book) when it is merely in the [people's] memories. The word al-kitab signifies a single and united entity and does not apply to a text which is scattered and not collected.[5]