Narrating hadeeth and not adopting it

Reference: Siyar A’laam an-Nubalaa. – Volume 10, Page 34

It was said to ash-Shaafi’ee:

Do you take this hadeeth O Abaa ‘Abdillaah? So he said: When I narrate an authentic hadeeth on the authority of the Messenger of Allaah and do not adopt it, then I testify to you [all] that I have lost my mind.

He is a graduate of the Islaamic University of Madeenah, having graduated from the Institute of Arabic Language, and later the Faculty of Sharee'ah in 2004. He currently resides in Birmingham, UK.