We have enjoined on man kindness to his parents: his mother bore him, in pain and in pain she gave birth to him, and his bearing and weaning takes thirty months. At length, when he reaches the age of full maturity and attains forty years, he says, "O my Lord! Help me to be grateful for Your favours which You have bestowed upon me, and upon both my parents, and to do good deeds that will please You. Grant me righteousness in my offspring. Truly, I have turned to You and, truly, I submit to You."