لا تَدعُوا عَلى أَنْفُسِكُم، وَلا تدْعُوا عَلى أَولادِكُم، وَلاَ تَدْعُوا عَلَى أَمْوَالِكُم، لا تُوافِقُوا مِنَ اللَّهِ سَاعَةً يُسأَلُ فِيهَا عَطاءً، فيَسْتَجيبَ لَكُم رواه مسلم (مشکوۃ المصابیح)
Translation
Hazrat Jabir (may Allah be pleased with him) narrated that the Messenger of Allah (peace and blessings of Allah be upon him) said: "Do not invoke evil (curse) upon your children, your wealth, or yourselves, lest it coincides with a moment in which Allah Almighty accepts supplications, and thus your evil invocation (curse) gets accepted." (Tafheem-ul-Muslim)