Reciting Takbir is Mashru` (Islamically acceptable) on the night and on the day of `Eid-ul-Fitr (the Festival of Breaking the Fast) before and after Salah until the end of the Khutbah (sermon). It is also recommended during the first ten days of Dhul-Hijjah and Days of Tashriq (11th, 12th and 13th of Dhul-Hijjah). The Sunnah is for each Muslim to recite it individually, but
reciting it aloud as a group (Part No. 2; Page No. 241) is a Bid`ah. It was authentically narrated that the Prophet (peace be upon him) stated:
Anyone who does an action which is not stated in this matter of ours (Islam) will have it rejected.
May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.