The letter a of the al- is unstressed, and can be transliterated by almost any vowel, usually by u. Because the letter r is a sun letter, the letter l of the al- is assimilated to it. Thus although the name is written in Arabic and Urdu with letters corresponding to Ata al-Rahman, the usual pronunciation corresponds to Ata ur-Rahman. The transliteration Atta often appears for the first element and Rehman for the last, all subject to variable spacing and hyphenation.