Musnad Ahmad 30:442

Rab'i ibn Ibrahim narrated to us, Abd al-Rahman—meaning Ibn Ishaq—narrated to us, from Sa'id, from Abu Hurairah, that the Messenger of Allah (peace and blessings of Allah be upon him) said: "Three things from the deeds of the people of Jahiliyyah (pre-Islamic ignorance) that the people of Islam will not abandon: wailing (over the dead), and seeking rain through the stars." And I said to Sa'id: "And what is the third?" He said: "The call of Jahiliyyah: 'O family of so-and-so, O family of so-and-so.'"