Fiqh-us-Sunnah Volume 2, Supererogatory Prayer, Fiqh 2.154B.

It is a sunnah to pronounce the takbirat on ‘id days. Concerning the ‘id of breaking the fast, Allah says “you should complete the prescribed period and that you should glorify Allah [i.e., say takbirat] for having guided you and that you may give thanks.” Concerning the ‘id of the sacrifice, Allah says: “that you may remember Allah during the well known days;” and: “He has made them subject to you, that you may glorify Allah for His guidance to you.  The majority of the scholars say that the time for the takbirat during the ‘id of breaking the fast is from the time one goes to the ‘id prayer until the khutbah begins. Weak hadith have been recorded stating this, but there are also authentic reports from Ibn ‘Umar and other companions that they did so. Al-Hakim says: “This sunnah has been practiced by ahl-il hadith. Malik, Ahmad, Ishaq, and Abu Thaur [have made statements concurring that practice].”

Some say that the takbirat are from the night before the ‘id, when the moon is seen, until the person goes to the musalla and the imam arrives. The time for the takbirat during the ‘id of the sacrifice is from the day of ‘Arafah until the time of the ‘asr on the thirteenth of Zhul-Hijjah.

Ibn Hajar writes in Fath al-Bari: “None of that has been confirmed from the Prophet. The most authentic report from the companions is that ‘Ali and Ibn Mas’ud would make the takbirat from the day of ‘Arafah to the ‘asr of the last day of Mina. Ibn al-Munzhir and others reported it. AshShaf’i, Ahamd, Abu Yusuf, and Muhammad follow that report and it is also the view of ‘Umar and Ibn ‘Abbas.”

There is no specific time for the takbirat during the days of tashriq (three days after ‘idul azha). In fact, it is preferred to pronounce takbirat during every moment of those days.

Al-Bukhari recorded: “During ‘Umar’s stay at Mina, he would say takbirat in his tent [so loud] that the people in the mosque would hear it and then they would start doing it also and the people in the market place would do the same and all of Mina would resound with the takbirat. Ibn ‘Umar used to say the takbirat, during those days of Mina, after the prayers and while on his bed, in his tent, while sitting and while walking during all of those days. Maimuna would say the takbirat on the day of sacrifice. The women used to say takbirat behind Abban ibn ‘Uthman and ‘Umar ibn ‘Abdulaziz along with the men in the mosque during the days of tashriq.” Al-Hafiz ibn Hajar said: “These reports show that the takbirat are made during all the times of these days, after salah and all other times. Some say the takbirat are made only after the salah, and some say they are to be made only after the fard prayers and not after nawafl, others declare them to be for men and not for women, while some say that they are only to be said in congregations and not individually, while others reserve them only for those who perform the salah on time and not for those who are making up a missed prayer, and some say only for residents and not travellers, whereas others think they are only for the people of the city and not for the people of the countryside. Apparently al-Bukhari is of the opinion that it is for all people and the reports that he has transmitted support his opinion.”

These takbirat can be made in many different forms. The most authentic form is that which has been recorded with a sahih chain by ‘Abdurrazaq from Salman, who said: “They made takbirat with: ‘Allahu akbar, Allahu akbar, Allahu akbar kabeera.”‘ From ‘Umar and ibn Mas’ud the following is related: “Allahu akbar. Allahu akbar. La ilaha illallah. Allahu akbar. Allahu akbar wa lillahil-hamd.” Translation: Allah is the greatest, Allah is the greatest. There is no God but Allah. Allah is the greatest, Allah is the greatest. All praise belongs to Allah.