Sayyiduna Abbas bin Abd al-Muttalib (may Allah be pleased with him) narrates: The Prophet (peace and blessings be upon him) took my hand and said: "O Abbas! Your people will not abandon three things: attacking people's lineage, wailing over the dead, and seeking rain by means of the stars."
Al-Tabarani recorded it in al-Mu'jam al-Kabir. Its chain contains al-Hasan bin Dinar, who is da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الجنائز / 4012