Jabir (Radhiallaho anha) reported:
The Messenger of Allah (Sallallaahu 'alaihi wasallam) said,
"Do not invoke curses on yourself or on your children or on your possessions lest you should happen to do it at a moment when the supplications are accepted, and your prayer might be granted.''
[Muslim]
Commentary:
Almighty Allah always listens to everyone's prayer but He has fixed certain times when He grants more prayers addressed to Him. Therefore, one should never curse oneself or one's own children or one's own business, etc., lest this is done at the time when prayers are accepted by Allah and then one has to regret it all his life.
Riyad-us-Saliheen – Hadith No: 1497
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