Takbiratul Ihram

957. To say Allahu Akbar in the beginning of every prayer is obligatory, and one of its Rukns, and it is necessary that every letter of Allahu and Akbar, and the two words are uttered in proper succession. It is also necessary that these two words should be pronounced in correct Arabic. If a person pronounces these words incorrectly, or utters their translation, it will not be valid.