Allahumma is an Arabic address to Allah, commonly rendered “O Allah.” It begins many supplications, introducing the praise or request that follows. It is not the whole dua by itself.
Allahumma ba‘id bayni wa bayna khatayaya kama ba‘adta baynal-mashriqi wal-maghrib. Allahumma naqqini minal-khataya kama yunaqqath-thawbul-abyadu minad-danas. Allahummagh-sil khatayaya bil-ma’i wath-thalji wal-barad.
O Allah, distance me from my sins as You have distanced east from west. O Allah, cleanse me of sins as a white garment is cleansed of dirt. O Allah, wash away my sins with water, snow and hail.
Context and use
The expression helps you recognise who is being addressed when reading a prayer. Learning what follows it makes the supplication more than a sound you repeat.
Sunni school differences
The basic meaning is a language question rather than a difference between Sunni schools. The setting and use of an entire supplication, especially inside salah, may involve school-specific rules.
What Allahumma means
Allahumma addresses Allah directly. It occurs in Qur’an 3:26, and in many transmitted supplications. In English, “O Allah” is a conventional rendering, while the rest of the sentence explains what is being praised or requested.
Recognising this opening can make a long dua less intimidating. First identify the address, then look for the request: forgive, guide, protect, grant or bless.
How to pronounce it
A useful learning division is Al-laa-hum-ma. The doubled consonants should not disappear, and the long vowel should not be reduced to the shortest possible sound. English letters remain an approximation, so listen to a qualified Arabic speaker when you can.
A transliteration is not a replacement for the Arabic text. Different books may spell the same sound differently. Compare the Arabic and meaning rather than assuming every spelling difference represents a different dua.
An example from a transmitted prayer
The opening supplication in Sahih al-Bukhari 744 begins by asking Allah to distance the speaker from sins. Its reported setting is the beginning of salah, between the opening takbir and recitation.
This example shows how Allahumma introduces a request. It does not establish that every prayer must begin with that exact opening formula; transmitted variants and school practice need to be distinguished.
Allahumma and Rabbana
Rabbana is commonly rendered “our Lord,” as in Qur’an 2:201. Rabbi means “my Lord,” as in the request for increased knowledge in Qur’an 20:114.
These expressions introduce different sourced passages. Do not combine their openings and endings and then label the result a verbatim quotation. Personal wording can be personal wording; a quoted text should keep its identity.
Common questions
Is Allahumma a dua? It is an address used in dua; read the following words to understand the complete request.
Must every dua start with it? Qur’anic prayers also begin with Rabbi or Rabbana. There is no need to force every text into one opening.
Can I simply say “O Allah” in a personal English prayer? That is an English form of address. Spoken language within salah remains a separate fiqh question.