Abu Dawud Book 2, Hadith Number 1527.
Chapter : Prohibition of cursing ones family and property.
Narated By Jabir b. Abd Allah : The Apostle of Allah (PBUH) said: Do not invoke curse on yourself, and do not invoke curse on your children, and do not invoke curse on your servants, and do not invoke curse on your property, lest you happen to do it at a time when Allah is asked for something and grants your request.