“Tell My believing servants to establish the prayer and spend, secretly and openly, from what We have provided for them, before there comes a Day in which there will be neither trade nor friendship. Allah is the One who created the heavens and the earth, and sent down water from the sky, bringing forth thereby fruits as provision for you. And He has subjected to you the ships, to sail through the sea by His command; and He has subjected to you the rivers. And He has subjected to you the sun and the moon, each pursuing its course; and He has subjected to you the night and the day.”