[Then We showed him the straight path...
[Then We showed him the straight path, whether he chooses to be grateful or shows ingratitude and be disbeliever] AlInsan v.3. [This Quran is a reminder and a guide and whoever wishes can find through it a way towards his Creator and Nurturer] Al-Insa'n v. 29. In other verses of the Quran free choice of man is repelled, the Sublime said: [Following their pray they defeated them by Allah’s leave] Al Baquarah v. 251.
[And it is not possible for any (disbelieving) person to believe except by Allah’s will] Yunus. V. 100. Therefore, this party adopted a midway view in between determinism and free choice – which is defined by the Imams of the progeny of Muhammad (Aa'ymat Ahlu Albait) (A.S.) (who were the original advocates for it) by their expression (A case inbetween two concerns); meanwhile it does not degrade Allah’s destiny, fate, sovereignty and justice.
It also maintains the concept of attributing man’s deeds both to Allah the Sublime and to himself, to this end they employed some Holy verses: [Whatever of good reaches you (O, man) it is from Allah, but whatever of evil befalls you, it is from yourself] An-Nissa'a v. 79. For, if there is no relation between the Creator and man’s deeds it would not have been correct to attribute man’s good deed to Allah the Great and Almighty.
Both Imam (Al Baquer) and (Al Sadequ) (A.S.) relate: (Allah is too merciful to Oblige His creatures to commit sins thereafter to torment them for those sins; further Allah is too dignified to demand something that would not come true). Imam Sadiqu (A.S.) too relates: (Neither determinism nor authorization, rather a case inbetween two concerns).