He had to rely on some miracle, but his miracle must be from a different type.

He had to rely on some miracle, but his miracle must be from a different type. It has to be a lasting miracle to be witnessed and tested by the future generations as well as by his contemporaries. In a time when there was neither camera nor film to make one action witnessable at various times, we cannot conceive any kind of lasting miracles except the type of speech. When a speech is superb and recorded in a book, its superiority can be witnessed and tested at any time by any generation.

If it is unmatchable, it will stay so forever, and its superiority can be judged by all generations. This is the type of miracle which is fitting for a final prophet, and this was the reason why Muhammad was equipped with the Holy Qur'an as evidence of his truthfulness. Previous…