﴿ خَلَقَ ٱلْإِنسَٰنَ مِن نُّطْفَةٍۢ فَإِذَا هُوَ خَصِيمٌۭ مُّبِينٌۭ ﴾

“He creates man out of a [mere] drop of sperm: and lo! this same being shows himself endowed with the power to think and to argue!”

(He hath created man) the reference here is to Ubayy Ibn Khalaf al-Jumahi (from a drop of) stinking (fluid, yet behold! he is an open opponent) openly arguing in favour of falsehood, saying: Who will revive these bones when they rot away?