The People of the Book did not eat suhur
that the Messenger of Allah ﷺ said: "The difference between our ˹way of˺ fasting and that of the People of the Book is eating of the suhur.
أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ فَصْلُ مَا بَيْنَ صِيَامِنَا وَصِيَامِ أَهْلِ الْكِتَابِ أَكْلَةُ السَّحَرِ