Definition of interest or "رِبا" in each of the 4 popular sunni schools of Fiqh?

Can someone spoonfeed me the definition of "Riba"="ربا"=interest in each of the following schools: Hanafi, Maliki, Shafi'i, along with explaining the Shafi'i definition. I'd like the definitions in Arabic too if possible, I remember in Maliki that it is in the lines of "كل قرض جر نفعا ...", while for Shafi'is, something like "عقد على عوض مخصوص غير معلوم التماثل...". In particular I heard the Shafi'i's definition is exceptionally long aiming to cover all cases but fails to cover only one of them, I appreciate a clarification on this matter and explanation for it, Actually if possible an explanation for each of the 3 definitions I'm requesting. so the request is for: - Definition for Riba in Hanafi Fiqh, written in Arabic, along with explanation, - Definition for Riba in Maliki Fiqh, written in Arabic, along with explanation, - Definition for Riba in Shafi'i Fiqh, written in Arabic, along with explanation pointing what it covers and what well-know cases of Riba it misses (I don't know if there is disagreement around Riba cases between schools of Islamic Fiqh, so I said "well-known cases"),