Islam is not confined only to the mosque and madrasah. It is a way of life.
Each and every aspect of a Muslim's life is supposed to be deen (Islam). It is for
this reason that Rasulullah (pbuh) has shown the ummah simple little
methods which would render each and every worldly affair of his to
become deen and for which he will be rewarded. It is for this reason
that saying : Bismillahirrahmanirraheem (In the Name of Allah, the Most Gracious, the Most Merciful)
Any important work that does not begin with Bismillah is devoid of Barakah. When there is no barakah the chances are that a person will not be successful in that project. Therefore, should be read before beginning that project or work.
Jabir is reported to have said that when say bismillah was revealed, the clouds gave way by moving to the East, the winds ceased blowing, the oceans became calm, the creatures prepared themselves to listen, the satanic were pelted with fire from the heavens and Allah I, swearing an oath by His honour, declared: Anyone who says this name of mine upon anything, I will surely impart barakah in that thing.
The reason for the above is as follows: in Bismillah there are three
names of Allah :
1) Allah which is His personal name indicating that all projects can
only be initiated by the will and wish of Allah.
2) Rahman (Kind) which is His attributive name indicating that
only Allah I can keep that project intact and existent
(guarding it against destruction).
3) Rahim (Most Merciful) which is also His attribute name indicating
that only Allah can, through His mercy and grace, enable any
person to derive benefit from that project.
Say it..