About the book What the author mentioned in his introduction: (The jurist said) Abu al-Layth al-Zahid Nasr bin Muhammad bin Ibrahim al-Samarqandi, may God Almighty have mercy on him: I have collected in this book from the arts of knowledge that cannot be ignored or neglected by the private and the general, and I have extracted that from many books, and I have mentioned in it what is clearer to the one looking at it and the one who desires it, and I have explained the arguments for what he needs