2/116-117 — He says "Be" and it is
"They said, 'God has taken a son.' Far be it from Him! To Him belongs whatever is in the heavens and the earth… He is the originator of the heavens and the earth. When He decrees a matter, He only says to it 'Be', and it is."
بَدِيع — root b-d-ʿ: having no precedent, done for the first time. From the same root come bidʿa (something brought in afterwards) and ibdāʿ (original production). A badīʿ is one who brings forth something without looking at a model, something with no antecedent.
The word's place here is meaningful: where the claim of taking a son is refused, creation without a model is stressed. For taking a son is the way of beings that multiply by reproduction — producing a like of oneself. A being who creates without a model has no need of this. The same logic as "He has not begotten, and He has not been begotten" in Sūrat al-Ikhlāṣ is built here with a different word.
كُن فَيَكُونُ — "He says 'Be', and it is". The expression pictures creation not as a process but as a word. Material, tool, labour, time — none of them is named.
A qualification has to be entered here: this expression says not that creation is in fact instantaneous but that it carries no difficulty whatever for God. Indeed the same Qurʾān speaks of the stages of creation too — the human being's being shaped stage by stage, the heavens and the earth being created "in six days". The two accounts do not conflict: one says how the process works, the other says whose the command is.