The Prophet (SAWA) said, 'Verily Allah, most High, created one hundred units of mercy on the day He created the heavens and the earth, each unit of which corresponds to all that is between the sky and the earth. Of these He descended one unit of mercy to the earth, and by virtue of that one unit, everything in creation shows understanding for one another, the mother is affectionate towards her child, and by virtue of the same unit, the birds and the beasts are able to drink water, and all creatures are able to subsist.