(BIHAR UL ANWAR VOL 78, P 338) And faith means performing &.
(BIHAR UL ANWAR VOL 78, P 338) And faith means performing &. discharging the obigatory duties &. avoiding the committing of forbidden acts &. faith, is the recognition &. knowing (Allah) through the heart &. admitting &. confessing through the tongue &. practicing through the parts of body (Physically). (TUHruL AQOOL P422).
(وسائل الشيعه ج18 ص102) One day Imam Reza(A.S) mentioned Quran & so he described the magnanimity & glory of it's authority & it's miracles saying, That is the firm cable of Allah & firmest handhold & the ideal & model path, it guides & leads toward paradise & is the saviour from the fire (of Hell). It does not corrode & wear out by the passage & flow of time. More over, it's continuous repetition & recitation through the tongue does not devalue & deppreciate it.
since, it is not made to exist for a certain age & period apart from other ages & periods. Instead, it has been made a proof & logic for all human beings. Falsehood does nither find passage in the front & afore of it nor from it's back side. It has been descended (revelated) by Allah, the All wise, All praise worthy.