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AlGhazalisIhya-Book_of_knowledge, page : 37
To go deep into the details of arithmetic and the nature of medicine as well as
such details, which, while not indispensable, are helpful in reinforcing the efficacy
of whatever is necessary, is however, considered meritorious, not obligatory.
The blameworthy (madhmum) sciences are magic, talismanic science, juggling,
trickery and the like.
The sciences of jurisprudence, which are intended in the study are all
praiseworthy. Sometimes, however, they may be confused with what may be
taken for praiseworthy but, in fact, are blameworthy. For this reason
jurisprudence is divided into praiseworthy and blameworthy sciences.
The praiseworthy sciences comprise sources (usul), branches (furu), auxiliary
(muqaddimat), and supplementary (mutammimat). There are therefore, four
kinds.
First come the sources (usul), which are four in number. The Book of Allah (The
Koran), the usage (sunnah) of His Prophet, the Agreement (ijma) of all Muslims,
such details, which, while not indispensable, are helpful in reinforcing the efficacy
of whatever is necessary, is however, considered meritorious, not obligatory.
The blameworthy (madhmum) sciences are magic, talismanic science, juggling,
trickery and the like.
The sciences of jurisprudence, which are intended in the study are all
praiseworthy. Sometimes, however, they may be confused with what may be
taken for praiseworthy but, in fact, are blameworthy. For this reason
jurisprudence is divided into praiseworthy and blameworthy sciences.
The praiseworthy sciences comprise sources (usul), branches (furu), auxiliary
(muqaddimat), and supplementary (mutammimat). There are therefore, four
kinds.
First come the sources (usul), which are four in number. The Book of Allah (The
Koran), the usage (sunnah) of His Prophet, the Agreement (ijma) of all Muslims,