The Adhan is the Islamic call to prayer. Here is an English translation of the Adhan, including some differences according to different Islamic sects (Madahib).
| Recital |
Arabic |
Transliteration |
Translation |
Sect |
| 4x* |
 |
Allah u Akbar |
God is greater |
Sunni & Shia |
| 2x |
 |
Ash-hadu alla ilaha illallah |
I bear witness that there is no lord except God |
Sunni & Shia |
| 2x |
 |
Ash-hadu anna Muhammadan rasulullah |
I bear witness that Muhammad is the Messenger of God |
Sunni & Shia |
| 2x** |
 |
Ash-hadu anna Aliya wali-ul-lah |
I bear witness that Ali is the vice regent of God |
Shia Only |
| 2x |
 |
Hayya 'alas-salat |
Make haste towards prayer |
Sunni & Shia |
| 2x |
 |
Hayya 'alal-falah |
Make haste towards welfare |
Sunni & Shia |
| 2x*** |
 |
Assalatu khayru min an-naum |
Prayer is better than sleep |
Sunni Only |
| 2x |
 |
Hayya- al Khair al amal |
Make haste towards the best thing |
Shia Only |
| 2x |
 |
Allah u Akbar |
God is greater |
Sunni & Shia |
| 2x**** |
 |
La ilaha illallah |
There is no lord except God |
Sunni & Shia |
* Followers of the Maliki Madhab say this line twice instead of four times.
** The line "I bear witness that Ali is the vice regent of God" is recited by Shias, but NOT as a part of the Adhan. Rather, according to Shia scholars it is preferable with the intention of Qurbat. A phrase like "Ameer-ul-Mu'mineen" (The Commander of the Faithful), may be added to the end of that line. Sometimes a variation of it may be recited the second time (such as "ash'hadu anna aliyyan amir al-mo'mineena wali'ul-lah" - I bear witness that Ali, The Commander of the Faithful is the Friend of Allah).
*** The line "Prayer is better than sleep" is recited by Sunnis only for the first prayer of the day at dawn (fajr salat).
**** Shias repeat this line twice.
References
Islamic Laws, by Seyed Sistani.
Wikipedia, the free encyclopedia.