Here is a book that enlightens us on the invocation of Grace and Peace on the best of men. A unique book in its field, which has never been equaled because of the multiplicity and richness of its interests and where we have explained the hadîth which have been traditionally reported on the invocation of Grace and Peace be upon the prophet – may God grant him Grace and Peace – by distinguishing the authentic from those who are defective among these hadîth.

We have also explained the secrets of this invocation as well as its nobility and the wisdom and interests it contains. Then we evoked there the occasions and the suitable circumstances to make this invocation by speaking about what is obligatory of it and the divergences of the scholars on this subject.