‏فضائل الصحابة‏ : Hadeeth No:6119 This hadith has been transmitted on the authority of Ibn Umar with a slight variation of wording (and the wording) that Allaah's Messenger (sallAllaahu alayhi wa sallam) said this on the pulpit. This hadith has been reported on the authority of Ibn Umar but through another chain of transmitters....

‏الإيمان : Hadeeth No:128 It is narrated on the authority of Abu Huraira that the Messenger of Allaah (may peace and blessings be upon him) observed: Two (things) are found among men which are tantamount to unbelief: slandering one's lineage and lamentation on the dead....