It is narrated from Sayyiduna Saib (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) once said: Jibreel came to me and said, "Order your companions to recite the Talbiyah in a loud voice."
It is narrated from Sayyiduna Saib (may Allah be pleased with him) that the Prophet (peace and blessings of Allah be upon him) said: Whoever unjustly frightens the people of Madinah, Allah will impose fear upon him. Upon him will be the curse of Allah, His angels, and all mankind, and on the Day of Resurrection, Allah will not accept any obligatory or voluntary act from him.
Hadith Referenceمسند احمد / مسند المدنيين رضي الله عنهم اجمعين / 16557