We have enjoined upon man to show kindness to his parents: in pain did his mother bear him, and in pain did she give him birth. His bearing and weaning takes thirty months. And so, when he attains to full manhood and reaches the age of forty, he prays: ‘My Lord! Grant me that I will be grateful for the blessings which You have bestowed on me and on my parents, and that I may do righteous deeds that will meet with Your goodly acceptance. Grant me good descendants. To You I turn in repentance. I am indeed one of those who submit themselves to You’.