"Then He made his progeny," the progeny of Adam thereafter, "from an extract of a base fluid," meaning: weak; referring to: the sperm-drop (nutfa).
﴿ثمَّ جعل نَسْله﴾ نَسْلَ آدَمَ بَعْدُ ﴿مِنْ سُلالَةٍ مِنْ مَاءٍ مَهِينٍ﴾ ضَعِيفٍ؛ يَعْنِي: النُّطْفَة