The Holy Quran says to the Holy Prophet (SAWS):
“And Allah has revealed upon you the Book and the wisdom, and has taught you what you did not know, and the grace of Allah upon you has been great.” (4:113)
In this verse the revelation of the Wisdom has been mentioned as separate from the revelation of the Book. It indicates that the wisdom referred to here is something additional to the Holy Quran, and it has also been revealed to the Holy Prophet (SAWS) by Allah Almighty. Then the Holy Quran proceeds to say:
“And (Allah) has taught you what you did not know”,
It means that Allah has not only revealed the Book, but has also revealed the Wisdom, and also taught the Holy Prophet (SAWS) what he did not know before. This teaching includes all kinds of directions given by Him to his Prophet, either through the Holy Book or through some ‘unrecited revelation’ in the light of which the Holy Prophet (SAWS) performed his functions as a messenger of Allah.