Mercedes star Hamilton and Red Bull rival Verstappen are among the 17 drivers that are under investigation after an alleged infraction during the sprint qualifying at the Lusail International Circuit.
New FIA race director Rui Marques confirmed in an official document before the session that a minimum lap time of 1:40.0 must be followed in order to try and avoid the field bunching up during sessions.
It now appears that a host of drivers have fallen foul of that rule, with the stewards set to investigate the alleged infractions after the session.
17 drivers under FIA investigation in Qatar
Among the alleged infringers, both Red Bull drivers, both McLaren drivers and both Ferraris are under investigation amid a fierce championship battle.
McLaren, currently chasing a first constructors' title since 1998, lead Ferrari by 24 points going into the final two events, while Red Bull are 53 points behind McLaren in third.
An official statement from the FIA has now confirmed that there will be no further action against the drivers.
It stated: "The stewards determined that the drivers took appropriate actions to not impede other drivers, and where required slowed down significantly to allow other drivers to pass while giving those drivers a clear track.
"The stewards therefore determine that the drivers concerned did not drive “unnecessarily slowly”, and that evidently the reason they were above the maximum time was due to their appropriate actions and take no further action."