According to the Quran, the creation of man is from clay but in another place it says from a clot of congealed blood and yet again in another place it says by water. How can one understand these explanations and how do they comply with modern science?
All these statements ( human beings are created from clay, from water, from congealed blood) are absolutely correct. The creation of human being has stages; the clay is one of them, the water is also a stage and semen fluid is from water, while the congealed blood is a stage after the formation of the zygote.
Modern science confirms all these stages as you can see the books of embryology.
Wassalam.