The structure was uncovered during construction work in Rahat, a majority-Bedouin town in the Negev that was established in the early 1970s.
The Israel Antiquities Authority said the mosque was established during the Muslim conquest of the Levant in the 7th century.
The mosque contains "a square room and a wall facing the direction of [Makkah]", with a half-circle niche in that wall pointing to the south, the authority said.
"These unique architectural features show that the building was used as a mosque."
It said the mosque probably hosted a few dozen worshippers at a time.
A short distance from the mosque, a "luxurious estate building" was also discovered, with the remains of tableware and glass artefacts that gave clues about the wealth of its residents, the authority said.
Three years ago, the authority unearthed a mosque near by that was also from the 7th to 8th centuries.
It has said the two mosques are "among the earliest known worldwide".
The mosques, estate and other homes found near by illuminate "the historical process that took place in the northern Negev with the introduction of a new religion — the religion of Islam, and a new rulership and culture in the region", the authority said.
"These were gradually established, inheriting the earlier Byzantine government and Christian religion that held sway over the land for hundreds of years."
The Muslim conquest of the region occurred in the first half of the 7th century.
The Madain Project, an online archive of Abrahamic history and archaeology, said the age of the site was determined by "traditional archaeological methods, such as identification of pottery styles, coins and oil lamps", which would mean construction occurred "around the end of the 7th and beginning of the 8th century CE, with a margin of 30 to 40 years."
The authority said the mosques found in Rahat would be preserved in their current locations, whether as historic monuments or as active places of worship.
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The specs: Rolls-Royce Cullinan
Price, base: Dh1 million (estimate)
Engine: 6.75-litre twin-turbo V12
Transmission: Eight-speed automatic
Power: 563hp @ 5,000rpm
Torque: 850Nm @ 1,600rpm
Fuel economy, combined: 15L / 100km
The specs: Aston Martin DB11 V8 vs Ferrari GTC4Lusso T
Price, base: Dh840,000; Dh120,000
Engine: 4.0L V8 twin-turbo; 3.9L V8 turbo
Transmission: Eight-speed automatic; seven-speed automatic
Power: 509hp @ 6,000rpm; 601hp @ 7,500rpm
Torque: 695Nm @ 2,000rpm; 760Nm @ 3,000rpm
Fuel economy, combined: 9.9L / 100km; 11.6L / 100km
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Ten tax points to be aware of in 2026
1. Domestic VAT refund amendments: request your refund within five years
If a business does not apply for the refund on time, they lose their credit.
2. E-invoicing in the UAE
Businesses should continue preparing for the implementation of e-invoicing in the UAE, with 2026 a preparation and transition period ahead of phased mandatory adoption.
3. More tax audits
Tax authorities are increasingly using data already available across multiple filings to identify audit risks.
4. More beneficial VAT and excise tax penalty regime
Tax disputes are expected to become more frequent and more structured, with clearer administrative objection and appeal processes. The UAE has adopted a new penalty regime for VAT and excise disputes, which now mirrors the penalty regime for corporate tax.
5. Greater emphasis on statutory audit
There is a greater need for the accuracy of financial statements. The International Financial Reporting Standards standards need to be strictly adhered to and, as a result, the quality of the audits will need to increase.
6. Further transfer pricing enforcement
Transfer pricing enforcement, which refers to the practice of establishing prices for internal transactions between related entities, is expected to broaden in scope. The UAE will shortly open the possibility to negotiate advance pricing agreements, or essentially rulings for transfer pricing purposes.
7. Limited time periods for audits
Recent amendments also introduce a default five-year limitation period for tax audits and assessments, subject to specific statutory exceptions. While the standard audit and assessment period is five years, this may be extended to up to 15 years in cases involving fraud or tax evasion.
8. Pillar 2 implementation
Many multinational groups will begin to feel the practical effect of the Domestic Minimum Top-Up Tax (DMTT), the UAE's implementation of the OECD’s global minimum tax under Pillar 2. While the rules apply for financial years starting on or after January 1, 2025, it is 2026 that marks the transition to an operational phase.
9. Reduced compliance obligations for imported goods and services
Businesses that apply the reverse-charge mechanism for VAT purposes in the UAE may benefit from reduced compliance obligations.
10. Substance and CbC reporting focus
Tax authorities are expected to continue strengthening the enforcement of economic substance and Country-by-Country (CbC) reporting frameworks. In the UAE, these regimes are increasingly being used as risk-assessment tools, providing tax authorities with a comprehensive view of multinational groups’ global footprints and enabling them to assess whether profits are aligned with real economic activity.
Contributed by Thomas Vanhee and Hend Rashwan, Aurifer
MATCH INFO
Champions League quarter-final, first leg
Tottenham Hotspur v Manchester City, Tuesday, 11pm (UAE)
Matches can be watched on BeIN Sports
The President's Cake
Director: Hasan Hadi
Starring: Baneen Ahmad Nayyef, Waheed Thabet Khreibat, Sajad Mohamad Qasem
Rating: 4/5
Getting there
Flydubai flies direct from Dubai to Tbilisi from Dh1,025 return including taxes
How England have scored their set-piece goals in Russia
Three Penalties
v Panama, Group Stage (Harry Kane)
v Panama, Group Stage (Kane)
v Colombia, Last 16 (Kane)
Four Corners
v Tunisia, Group Stage (Kane, via John Stones header, from Ashley Young corner)
v Tunisia, Group Stage (Kane, via Harry Maguire header, from Kieran Trippier corner)
v Panama, Group Stage (Stones, header, from Trippier corner)
v Sweden, Quarter-Final (Maguire, header, from Young corner)
One Free-Kick
v Panama, Group Stage (Stones, via Jordan Henderson, Kane header, and Raheem Sterling, from Tripper free-kick)
Captain Marvel
Director: Anna Boden, Ryan Fleck
Starring: Brie Larson, Samuel L Jackson, Jude Law, Ben Mendelsohn
4/5 stars
Gulf Under 19s final
Dubai College A 50-12 Dubai College B