Answer: The Quran is always encouraging people to seek knowledge and understanding. Unlike conventional business, Islam holds the view that all exchangeable things cannot be subject to business.
Explanation: Here are some verses:
Learning: "Seek knowledge from the cradle to the grave."
Bussiness: “O you who believe: Eat not up your property among yourselves unjustly except it may be trade among you by mutual consent” (part no 5, surah no 4 verse no 29.)
I hope this helps! When it says all the no's they just mean part 4 of the Quran, Surah 4, and verse or ayiah 29. Surah 4 is the Surah called An-Nisa'.