And he turned away fromthem and said, “Oh, my sorrow over Yusuf,” and his eyes became white from grief, and he fell into silent melancholy. They said, “By Allah , you will not cease remembering Yusuf until you become fatally ill or become of those who perish.” He said, “ I only complain of my suffering and my grief to Allah , and I knowfrom Allah that which you do not know. - Quran, Surat Yusuf, 12:84-86