The Petra theory raises a real archaeological question: some early mosques do not point precisely toward Mecca. But their orientations do not establish a former Petra qibla. They show the limits of early surveying, the rebuilding of mosques, and the danger of treating approximate architectural axes as exact theological evidence.
Why the argument appears persuasive
The strongest form of the argument is not simply that one mosque is misaligned. It is that several early foundations, including the first mosque at Fustat and early structures associated with Jerusalem and Guangzhou, seem to share a direction better explained by Petra than by Mecca. If the pattern were consistent, and if these buildings were securely dated in their original forms, one might reasonably ask whether the earliest Muslim community regarded Petra as its sacred centre and whether Mecca became central only later.
This deserves examination rather than dismissal. Early mosques often have strikingly different qibla orientations, and some apparently point well away from the modern bearing to Mecca. The claim is also strengthened when a building's date is uncertain or when later historians assume that its orientation must have been Meccan.
What the Quran says about the change
The Quran does not say that Muslims faced Mecca from the beginning of the Prophet's mission (PBUH). It explicitly records an earlier direction and then a commanded change:
We have certainly seen the turning of your face toward the heaven, so We will surely turn you to a direction with which you will be pleased. So turn your face toward al-Masjid al-Haram, and wherever you are, turn your faces toward it.
Quran 2:144
It repeats the command in the following verses:
From wherever you go out, turn your face toward al-Masjid al-Haram. Indeed, it is the truth from your Lord. And Allah is not unaware of what you do.
Quran 2:149
Thus Islam does teach a change of qibla, but from Jerusalem to Mecca during the Prophet's lifetime (PBUH), not from Petra to Mecca generations later. The earliest Muslim community understood the command in precisely that way, and the Kaaba was already the centre of pilgrimage and worship in the Quran.
Why mosque orientation is not decisive
A mosque's wall is not always a measured great-circle bearing. Builders used local astronomical knowledge, inherited street plans, cardinal directions, and practical construction constraints. Many early mosques were enlarged or rebuilt, and the date of a surviving wall need not be the date of the first prayer space. For distant worshippers, the legal requirement was to face the qibla direction generally; exact bearings were not equally available everywhere.
Nor does the proposed pattern itself produce a single reliable Petra direction. Petra lies east or northeast from some sites and in quite different bearings from others. A collection of approximate axes can therefore be made to look coherent only after selecting particular buildings, dates, and assumptions. Guangzhou is especially difficult because its early mosque history and original fabric are not securely preserved.
What the evidence does and does not establish
These studies establish that some early mosques were not accurately aligned with Mecca. They may also reveal regional conventions and the gradual improvement of qibla calculation. They do not establish that Petra was Islam's original sacred centre, nor that a seventh-century relocation occurred. The Quranic account, the early Muslim memory of the Jerusalem-to-Mecca change, and the lack of a consistent Petra alignment make that conclusion unwarranted. Archaeology can refine our understanding of early buildings, but approximate walls cannot overturn the clear contemporary claim preserved in the Quran.