It was asked (by the people), "O Messenger of Allah (blessings and
peace be upon him) ! How does one curse his parents?"
The Prophet (blessings and peace be upon him) said, "It happens whom
one abuses the father of another, and the latter abuses the father and
mother of the former."
Sahih Al-Bukhari Hadith 8.4 Narrated by Abdullah bin Amr
