Do not abuse the dead, because they have attained that which they had forwarded

In the Name of Allah, the Most Beneficent, the Most Merciful.

The deceased Muslims should not be censured or condemned for their wrongdoings, for, they have reached their end and they are receiving the return of their deeds in the Hereafter. 

Aa'isha (radhi allahu anha) narrated, 'The Messenger of Allah (sallallahu aliahi wa-sallam) said, 

'Do not abuse the dead, because they have attained that which they had forwarded (i.e., their deeds, good or bad).' [Saheeh al-Bukharee]

Fitnah continues upon the heart, except if the Deen of the slave is completely for Allaah.  

Ibn Taymeeyah – 'al-Fatawa' 10/545