The Sign of Allah in the progressive creation of Man from Clay then from Nutfah and thereafter

Allah tells us how He initially created man from an extract of Tin. This was Adam, peace be upon him, whom Allah created from sounding clay of altered black smooth mud. Ibn Jarir said, "Adam was called Tin because he was created from it." Qatadah said, "Adam was created from Tin." This is the more apparent meaning and is closer to the context, for Adam, upon him be peace, was created from a sticky Tin, which is a sounding clay of altered black smooth mud, and that is created from dust, as Allah says:

وَمِنْ ءَايَـتِهِ أَنْ خَلَقَكُمْ مِّن تُرَابٍ ثُمَّ إِذَآ أَنتُمْ بَشَرٌ تَنتَشِرُونَ

ثُمَّ إِنَّكُم بَعْدَ ذَٰلِكَ لَمَيِّتُونَ

Then, after all this, you are to die - 23:15