Regarding the hadith you mentioned about the formation of the fetus, there is another opinion that agrees with modern experimental medicine, which is that all these stages, namely the drop of fluid, then the clot, then

The questioner : He says:The questioner : Regarding the hadith you mentioned about the formation of the fetus, there is another opinion that agrees with modern experimental medicine, which is that all these stages, namely the drop of fluid, then the clot, then the lump of flesh, occur within the first forty days. This is the understanding or opinion of some scholars. What is your comment on that?

The Shaykh : Our comment on this is that we adhere to the hadith of 'Abdullah ibn Mas'ud and do not go beyond it. He (may Allah be pleased with him) said: As for what is reported in the hadith of Usayd ibn Hudayr or similar to it, which indicates a contrary view, the planning mentioned therein is not the formation mentioned in the hadith of 'Abdullah ibn Mas'ud, but rather it is planning or formation through coloring only, not through division and differentiation. There is a difference between the two. So our belief is what is indicated by the hadith of 'Abdullah ibn Mas'ud (may Allah be pleased with him), and whatever contradicts it is attributed to another formation or another planning.