Ferrari have warned Lewis Hamilton that his on-track friction with Charles Leclerc "is not good for the team".
The pair collided at the opening corner of Sunday’s Italian Grand Prix, leading Hamilton to accuse his team-mate of forcing him off the track.
Although stewards opted against penalising either driver at Monza, Hamilton told fans they "should not be worried about me". His comment followed Leclerc’s claim that both were to blame for an incident that cost Hamilton six positions.
"There was no ‘we’ in it," said Hamilton, placing blame squarely on Leclerc. "I don’t race dirty, I’ve always raced clean and fairly and always left space."
The 41-year-old also called for a "written rules of engagement".
His former rival, 2016 world champion Nico Rosberg, felt the clash was "100 per cent Charles’ fault", despite describing Hamilton as "aggressive".
Leclerc crashed out on the next lap, while Hamilton finished sixth to leave his hopes of catching Kimi Antonelli for a record eighth world championship nearly over.
Reflecting on a dismal result at Monza, team principal Fred Vasseur said: "We will have time to discuss it (with the drivers). But the outcome of Turn 1-2 is not good for the team."
Hamilton trails Antonelli by 76 points – the equivalent of over three victories – with 10 scheduled races left.
Vasseur, however, defended his choice not to grant Hamilton priority over Leclerc in their pursuit of the title.
Hamilton held a 28-point lead over Leclerc prior to Monza, and is 36 ahead going into this weekend’s inaugural round in Madrid.
In the race's aftermath, Hamilton stated it is now "far too late" for Ferrari to back him completely.
Vasseur countered: "A good comparison that I made was that last year (Oscar) Piastri was leading the championship at this stage of the season and if McLaren put everything on Piastri (instead of team-mate Lando Norris), Max Verstappen would have been champion.
"At one stage you have to take a decision, but it was too early to take a decision before Monza. Every single team principal in the world would love to let them race. To freeze positions is not an easy call. Now I will have time to discuss it with the drivers."
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