Fussilat Ayah 10

وَجَعَلَ فِيهَا رَوَٲسِىَ مِن فَوْقِهَا وَبَـٰرَكَ فِيهَا وَقَدَّرَ فِيهَآ أَقْوَٲتَهَا فِىٓ أَرْبَعَةِ أَيَّامٍ سَوَآءً لِّلسَّآئِلِينَ ١٠ He placed on the earth firm mountains, standing high, showered His blessings upon it, and ordained ?all? its means of sustenance—totaling four Days exactly—for all who ask.