Dr. Joe Leigh Simpson is Professor of Obstetrics and Gynaecology and Professor of Molecular and Human Genetics at the Baylor College of Medicine, Houston, Texas, USA. Professor Simpsom studied the following two sayings of the Prophet Mohammad sws:

‘In every one of you, all components of your creation are collected together in your mother’s womb by forty days…..’

And

‘If forty –two nights have passed over the embryo, God sends an angel to it, who shapes it and creates its hearing, vision, skin, flesh and bones."

He studied these two sayings of the Prophet Muhammad extensively, noting that the first forty days constitute a clearly distinguishable stage of embryogenesis. He was particularly impressed by the absolute precision and the accuracy of those sayings of the Prophet Muhammad. Then, during one conference he gave the following opinion:

“So that the two hadeeths (the sayings of the Prophet Muhammad) that have been noted provide us with a specific time table for the main embryological development before forty days. Again, the point has been made I think, repeatedly by other speakers this morning: these hadeeths could not have been obtained on the basis of the scientific knowledge that was available at the time of their writing. It follows , I think, that not only is there no conflict between genetics and religion but, in fact, religion can guide science by adding revelation to some of the traditional scientific approaches, that there, exist statements in the Qur’an shown centuries later to be valid, which support knowledge in the Qur’an having been derived from God.”