Compare Tisdalls book to the one by BY T. W. ARNOLD, B.A, called PREACHING OF ISLAM, A History of the Propagation of the Muslim Faith. 1896
This man looked at the sources as well but took a different tract; he used his intellect instead of any indoctrinated beliefs.
One reason he may have done this is due to the fact that he asked help from a mutually respected personage of ours, Sir Sayyed Ahmed Khan.
Again, Canon Taylor 1
says : " It is easy to understand why this reformed Judaism [Islam]
spread so swiftly over Africa and Asia. The African and Syrian [christian]
doctors had substituted abstruse metaphysical dogmas for the
religion of Christ : they tried to combat the licentiousness of the
age by setting forth the celestial merit of celibacy and the
angelic excellence of virginity seclusion from the world was the
road to holiness, dirt was the characteristic of monkish sanctity
the people were practically polytheists, worshipping a crowd of
martyrs, saints and angels ; the upper classes were effeminate and
corrupt, the middle classes oppressed by taxation, 2 the slaves
without hope for the present or the future. As with the besom
of God, Islam swept away this mass of corruption and superstition.
It was a revolt against empty theological polemics ; it was a
masculine protest against the exaltation of celibacy as a crown of
piety. It brought out the fundamental dogmas of religion the
unity and greatness of God, that He is merciful and righteous,
that He claims obedience to His will, resignation and faith. It j
proclaimed the responsibility of man, a future life, a day of judgment, and stern retribution to fall upon the wicked ; and
enforced the duties of prayer, almsgiving, fasting and benevolence.
It thrust aside the artificial virtues, the religious frauds and follies,
the perverted moral sentiments, and the verbal subtleties of
theological disputants. It replaced monkishness by manliness.
It gave hope to the slave, brotherhood to mankind, and recognition to the fundamental facts of human nature."
So far the book has not let me down.