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the least word, and can be made to move from their belief with the least attraction or threat,
although,
like the Jews, they do not doubt the veracity of their own doctrine, yet they differ in the degree
of their
determination.

Such variations in the degree of determination also exist in the true belief, and good deeds
influence the
development and growth of this determination, just as irrigation influences the growth of trees.

Allah says:, "Whenever a chapter is revealed, some of them ask: `Which of you has it strengthened in
belief?' It will surely increase the belief of the believers and give them joy." (Quran 9:124). And
again,
"It was He who sent down tranquillity into the hearts of the believers so that they might add
belief to
their faith." (Quran 48:4). According to a prophetic saying; "Belief is subject to increase and
decrease."
This is accomplished by the influence of good deeds upon the heart, a thing which is not perceived
except by those who meditate over their different inner states during the hours of worship and apply