Surah Ya-Sin 36:82
إِنَّمَآ أَمْرُهُۥٓ إِذَآ أَرَادَ شَيْـًٔا أَن يَقُولَ لَهُۥ كُن فَيَكُونُ
His command is only when He intends a thing that He says to it, "Be," and it is.
Translation: Saheeh International
Tafsir
His command His affair when He wills a thing that is when He will to create something is just to say to it ‘Be’ and it is a variant reading for fa-yakūnu has fa-yakūna as a supplement to yaqūla ‘to say’.
Excerpt from Tafsir al-Jalalayn, commentary on 36:82, via Quran.com. The reader has the full commentary and 9 more tafsirs.