Saḥūr is the pre-dawn meal that is consumed in the blessed month of Ramaḍān prior to fasting, and it is called that because the meal is consumed at the time of saḥār which is shortly before dawn. Allāh said:
كَانُوا قَلِيلًا مِّنَ اللَّيْلِ مَا يَهْجَعُونَ ﴿١٧﴾ وَبِالْأَسْحَارِ هُمْ يَسْتَغْفِرُونَ ﴿١٨﴾
“They would only sleep a small part of the night, and at the time of saḥar [i.e. the time just before dawn], they would seek forgiveness.”
Ibn Ḥajr (رحمه الله) said: “Saḥar is the last part of the night [i.e. the time just before dawn], and saḥūr is the...