Do not abuse the dead

Ummul Momineen Sayyida Aaisha (Radiyallahu anha) said:

The Messenger of Allah (Sallallahu Alaihi Wasallam) said,

"Do not abuse the dead,

because they have attained that which they had

forwarded (i.e. their deeds, good or bad).''

(Al-Bukhari).