have been overtaken by time. Books are now sent through officially registered mail, with a number and date; this is among the most secure means, safest from being lost, altered, or tampered with, and it is faster. All praise is due to Allah, who taught man what he did not know. Now, praise be to Allah, matters have become easy in every respect. The jurists, may Allah have mercy on them, mentioned these procedures and precautions only in light of the age in which they lived; every era has its own people and its own prevailing order.