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AlGhazalisIhya-Book_of_knowledge, page : 30
made at leisure and convenience. Once the intended pilgrim has made the
intention to make the pilgrimage, it would then become necessary for him/her to
learn the essential elements of how to perform the pilgrimage but not the
voluntary acts connected with the pilgrimage as they are not part of the Divine
ordinance that are obligatory upon all Muslims. The same reasoning applies to
the knowledge of the other works, which are Divinely ordained and binding on all
Muslims.
Regarding the obligatory acquisition of knowledge of that which is prohibited, the
obligation is conditioned by the rise of new developments and changed
circumstances relevant to it, and varies with the conditions of the individual. For
example, the mute is not obliged to know what is unlawful in speech nor the blind
to know what things are unlawful to see. Similarly, the Bedouin is not obliged to
know the houses in, which it is unlawful to sit. All these obligations only apply
within the limits of circumstance, and need not be learned when it is certain that
the question of their applicability will not arise. But whatever situations resemble
these and may, therefore, be confused with them must be distinguished from
them – as, for example, the case where a man who, at the time of embracing
Islam, was in the habit of wearing silk garments, or possessed something
intention to make the pilgrimage, it would then become necessary for him/her to
learn the essential elements of how to perform the pilgrimage but not the
voluntary acts connected with the pilgrimage as they are not part of the Divine
ordinance that are obligatory upon all Muslims. The same reasoning applies to
the knowledge of the other works, which are Divinely ordained and binding on all
Muslims.
Regarding the obligatory acquisition of knowledge of that which is prohibited, the
obligation is conditioned by the rise of new developments and changed
circumstances relevant to it, and varies with the conditions of the individual. For
example, the mute is not obliged to know what is unlawful in speech nor the blind
to know what things are unlawful to see. Similarly, the Bedouin is not obliged to
know the houses in, which it is unlawful to sit. All these obligations only apply
within the limits of circumstance, and need not be learned when it is certain that
the question of their applicability will not arise. But whatever situations resemble
these and may, therefore, be confused with them must be distinguished from
them – as, for example, the case where a man who, at the time of embracing
Islam, was in the habit of wearing silk garments, or possessed something