His precepts are simply the records of his practice.
The idea of this immense collection of ethical and moral precepts was first suggested to the poet by his favourite disciple Hasan, better known as Husam-uddin, who in 1258 became Jalal-uddin's chief assistant.
It further contains instructions for using the library, and precepts for daily life.
On the other hand, his example in manumitting most of his slaves, together with the precepts of the church, practically put an end to slavery in the course of the 13th century, the slaves becoming for the most part serfs, who differed from the free peasants only in the fact that they were attached to the soil (adscripti glebae).
Friends have always held that war is contrary to the precepts and spirit of the Gospel, believing that it springs from the lower impulses of human nature, and not from the seed of divine life with its infinite capacity of response to the Spirit of God.