The Book of Al Lu'lu' wal Marjan is a book containing a collection of authentic hadiths about various branches of Shari'a science. And among other contents it discusses faith

According to Shaykh Muhammad bin Salih Al 'Utsaimin, the meaning of faith in language is a confession that gives birth to an attitude of acceptance and submission. He said this meaning matches the meaning of faith in terms of shari'ah. And he criticized people who interpret faith in language as just heart justification (tashdiq) without any elements of acceptance and submission. The word 'faith' is common fi'il (a verb that does not need an object), while tashdiq is fi'il muta'addi (needs an object) (See Syarh Arba'in, p. 34)