Celtic dropped Scottish Premiership points for the second time this season - and slipped to second place in the table - as they were held to a stalemate by a stuffy Hibernian.
The point extends David Gray's unbeaten league run, with this a fourth successive draw in an unbeaten start to their league campaign.
A point here in Glasgow would seem a significant boost, too, after they failed to capitalise in recent fixtures.
Brendan Rodgers opted to start Japan forward Daizen Maeda on the right, looking to find a solution to his front-three conundrum, with Kelechi Iheanacho starting centrally.
They looked sharp early on, and another big goal looked odds on for the Nigerian striker when, after a wonderful break, Maeda played him in but his shot struck the crossbar.
Marcelo Saracchi had the same outcome from a tight angle, and Callum McGregor was then denied, as Celtic continued to be frustrated.
It was Hibs who ought to have gone ahead, though, when Kieron Bowie nodded a free-kick into Warren O'Hora's path, but he somehow scooped over from a few yards.
Hibs then showed resistance throughout the second half, blocking shots and staying solid.
Iheanacho looked to have broken through but was deemed just offside, then he couldn't connect with Saracchi's centre when a goal looked certain.
Celtic reinforcements arrived. Paulo Bernardo was thwarted by Raphael Sallinger and Johnny Kenny, twice, nodded over from great positions as Hibs held on for a point.