الله أكبر الله أكبر | Allahu Akbar - Allahu Akbar
لا إله إلا الله الله أكبر | La-ilaha Illallah - Allahu Akbar
الله أكبر ولله الحمد | Allahu Akbar - Wa-lil-laahil hamd
Ibn ‘Umar and Abu Hurayrah (Radi Allahu 'Anhum) used to go out to the market-place on first ten days of Dhu’l-Hijjah, reciting Takbeer, and the people used to recite Takbeer because of their Takbeer.
[Saheeh Bukhari
