Adh-Dhaariyat • BN-TAFSEER-IBN-E-KASEER
﴿ كَانُوا۟ قَلِيلًۭا مِّنَ ٱلَّيْلِ مَا يَهْجَعُونَ ﴾
“they would lie asleep during but a small part of the night,”
Please check ayah 51:23 for complete tafsir.