We have instructed man to be good to his parents. His mother bore him with difficulty and with difficulty gave birth to him; and his bearing and weaning take thirty months. Then when he achieves his full strength and reaches forty, he says, ‘My Lord, keep me thankful for the blessing You bestowed on me and on my parents, and keep me acting rightly, pleasing You. And make my descendants righteous. I have made tawba to You and I am truly one of the Muslims.’