Wallahi Meaning
By Allah (an oath). The meaning, Arabic, when to say it, and its source in the Quran and Sunnah.
وَاللَّهِ
- Transliteration
- Wa-llāhi
- Meaning
- By Allah (an oath)
Wallahi means “by Allah”. It is an oath: you are calling Allah as witness that what you say is true.
Swear by Allah or stay silent
The Prophet ﷺ heard ‘Umar swearing by his father and said: Allah forbids you to swear by your fathers; whoever must swear, let him swear by Allah or keep quiet (Sahih al-Bukhari 6646).
Take it seriously
Because it calls on Allah’s name, “wallahi” should not be used lightly or for things that aren’t true. The Quran explains the expiation for breaking a deliberate oath: feeding or clothing ten poor people or freeing a slave, and if that isn’t possible, fasting three days (Quran 5:89). Allah does not hold people accountable for oaths said thoughtlessly (the same verse).
Related forms
Wallahi, billahi and tallahi all mean “by Allah”.
Quran and hadith references link to quran.com and sunnah.com, where you can read the full text. Reviewed 19 October 2026. Spotted a mistake? Let us know.
Related Islamic phrases
All Islamic phrases, dates and tools
Frequently asked questions
What does Wallahi mean?
“By Allah.” It is an oath that what you are saying is true.
Is it OK to say Wallahi?
Swearing by Allah is how Muslims swear an oath (Sahih al-Bukhari 6646), but it should be used truthfully and not lightly.