فَجُمِعَ ٱلسَّحَرَةُ لِمِيقَٰتِ يَوْمٍ مَّعْلُومٍ
So the magicians were gathered for the appointed time of a known day.
Roots in this verse: ج م ع (jmE), س ح ر (sHr), و ق ت (wqt), ي و م (ywm), ع ل م (Elm)