﴿ وَفَجَّرْنَا ٱلْأَرْضَ عُيُونًۭا فَٱلْتَقَى ٱلْمَآءُ عَلَىٰٓ أَمْرٍۢ قَدْ قُدِرَ ﴾

“and caused the earth to burst forth with springs, so that the waters met for a purpose pre-ordained:”

(And caused the earth to gush forth springs) for 40 days, (so that the waters) of the heaven and the earth (met for a predestined purpose) met for a measure that We have appointed: the rain of heaven and the water of springs; it is also said that this means: the waters met for a decreed purpose to destroy the folk of Noah.