The annual pilgrimage that draws two million Muslim faithful from across the globe and starts this year on Wednesday has become embroiled in a dispute between Doha and Riyadh now nearing its third month.
Qatar's only land border, which it shares with Saudi Arabia, has been closed and travel, diplomatic and economic sanctions imposed over charges that Doha supports Islamist extremists and has too close ties to Riyadh's regional rival Iran.
Impacting on the hajj, only a few dozen Qatari nationals have been able to travel to Mecca and Medina, western Saudi Arabia, according to a member of Qatar's state-linked National Human Rights Committee (NHRC).
"Through the border, we estimate 60 to 70 people (travelled) last week," he told AFP. "It's not an official figure, we are waiting for an official figure."
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Media reports in Saudi Arabia have put the number at up to 1,200 Qataris.
In sharp contrast, 12,000 Qataris took part in last year's hajj, a pillar of Islam that capable Muslims must perform at least once in their lives, according to the state- run Qatar News Agency.
With flights between Qatar and Saudi Arabia suspended and Qatar Airways banned from using Saudi airspace, Riyadh had offered to ferry pilgrims using exclusively Saudi Arabian Airlines planes.
But the offer soon became mired in the diplomatic spat, with Qatar charging that Saudi authorities had politicised a religious right.
The Saudi carrier accused Qatar of refusing to allow its planes to land in the emirate on the grounds that they lacked "the right paperwork".
The decision to reopen the border came a day after a surprise meeting between Saudi Crown Prince Mohammed bin Salman and a little-known member of Qatar's royal family, sparking allegations Riyadh was seeking regime change in Doha.
In past years, most Qatari pilgrims travelled to Mecca, crossing the width of Saudi Arabia, in officially-sanctioned groups.
Those who crossed into Saudi Arabia this year have travelled privately, ignoring official Qatari warnings over the treatment they could receive in the kingdom.
Doha has said it is worried about potential "harassment" of Qatari pilgrims who make the journey to Mecca.
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