Musnad Ahmad 2:252

'Abd al-Razzaq narrated to us, Ma'mar narrated to us, from al-Zuhri, from Ibn al-Musayyib, who said: When Abu Bakr died, he was wept over. So 'Umar said: "Indeed, the Messenger of Allah (peace and blessings of Allah be upon him) said: 'The deceased is punished by the weeping of the living.'"