Is there any Hadith which states:
The best of you are those who memories the Quran and teach it and the worst of you are those who forget the Quran?
I have not come across this as one Hadith. Imam Bukhari (rahimahullah) has recorded the first part of the Hadith. See here.
See here for other Hadiths regarding warning against forgetting the Quran.
And Allah Ta’ala Knows best.
Answered by: Moulana Suhail Motala
Approved by: Moulana Muhammad Abasoomar