Allah Almighty says: {Those who abuse believing men and women for something they did not commit, they will bear the burden of slander and flagrant sin.} [Surat al-Ahzāb: 58]
1578/1- Abu Hurayrah (may Allah be pleased with him) reported that the Messenger of Allah (may Allah’s peace and blessings be upon him) said: “Two (matters) are signs of disbelief in those who commit them: defaming lineage and wailing over the dead.” [Narrated by Muslim]
Wailing: loud weeping and screaming upon the death of someone.
1) Casting doubt about people’s lineage and wailing over the dead are acts of disbelief and manners of the pre-Islamic era of ignorance; they must be shunned.
2) People are entrusted with their lineages, so it is impermissible to defame them.