It was narrated from Mad an bin Abu Talhah AIYa'muri that 'Umar bin Khattab stood up to deliver a sermon one Friday, or he addressed them one Friday. He praised and glorified Allah, and said: "By Allah, I am not leaving behind any problem more difficult than the one who leaves behind no heir. I asked the Messenger of Allah , and he never spoke so harshly to me about anything as he spoke to me about this. He jabbed his finger into my side or my chest and said: '0 'Umar, sufficient for you is the Verse that was revealed in summer, at the end of Surat An-Nisa.'." (Sahih)