Usually after the Nikah ceremony in the Musjid, people shake hands, embrace and engage in loud talk and laughter inside the Musjid.

Answer

Among the signs of Qiyaamah mentioned by Rasulullah (Sallallahu alayhi wasallam) is that "Voices will be raised in the Musaajid.". This evil is prevalent in all the Musaajid and it is not restricted to after Nikah ceremonies although the sin is magnified on Nikah occasions.

We have advised Muslims perhaps a „million‟ times of this evil. But a carrion consuming community‟s brains are indurate and their hearts are inveterately corrupt, hence they refuse to understand. The words of the Qur‟aan Majeed and the Ahaadith of Rasulullah (Sallallahu alayhi wasallam) have no effect on the spiritually putrefied hearts of Muslims.