The incident occurred on lap two of the race at Spa-Francorchamps, with Hamilton leading, passing Mercedes team-mate and polesitter Rosberg off the line.
Approaching the right- hander at Les Combes at the end of the Kemmel Straight, Rosberg attempted a passing manoeuvre on Hamilton, only to seemingly back out.
In doing so, it resulted in contact between the two for the first time, with Rosberg’s right front-wing endplate clipping Hamilton’s left-rear tyre.
It created a puncture that resulted in a long three-mile return to the pits for Hamilton, ultimately wrecking his race in which he retired at the end of lap 39 of 44.
As for Rosberg, he went on to claim second place and has now opened up a 29-point cushion over Hamilton with seven races remaining.
Red Bull driver Daniel Ricciardo claimed victory in the race, with Valtteri Bottas (Williams) finishing third.
The incident resulted in a heated, angry meeting between Hamilton, Rosberg, Mercedes motorsport boss Toto Wolff, technical executive director Paddy Lowe and non-executive chairman Niki Lauda. Following the meeting, Hamilton dropped a bombshell when he said: “We just had a meeting about it and he basically said he did it on purpose. He said he did it on purpose.
“He said he could have avoided it. He said ‘I did it to prove a point’, he basically said ‘I did it to prove a point’.
“And you don’t have to just rely on me. Go and ask Toto, Paddy and all those guys who are not happy with him as well.”
Mercedes motorsport boss Toto Wolff made it clear Rosberg was at fault as he opted not to move line.
“Nico felt he needed to hold his line. He needed to make a point, but for Lewis (from his perspective), it was clearly not him who needed to be aware of Nico,” Wolff said.
“He (Rosberg) didn’t give in. He thought it was for Lewis to leave him space, and that Lewis didn’t leave him space.
“So they agreed to disagree in a very heated discussion amongst ourselves, but it wasn’t deliberately crashing. That is nonsense.”
“It was deliberately taking into account that if Lewis moves or would open up then it could end up in a crash.”
Wolff added: “The incident, as I see it, is not acceptable for us.
“What we saw there was that Nico was not prepared to take the exit, and that caused the collision. That is not something we want to happen.”
Prior to the meeting Wolff had suggested the possibility team orders would now be imposed, and even the prospect of taking action against Rosberg.
“We’ve not hit the self-destruct button yet, but there is a lot at stake,” added Wolff.
“If you don’t manage this properly now it could end up at that point.
Asked about a Hamilton’s remark suggesting Rosberg would get nothing more than a slap on the wrist, Wolff said: “If Lewis has said that, that there’s going to be no consequence, he’s not aware of what consequences we can implement. We’ve seen the limits of the slap on the wrist. Maybe the slap on the wrist is not enough.”
Hamilton conceded to being “gobsmacked” with regard to Rosberg’s remarks, with the trust between the two shattered.
“When you’re out there you have to trust people to think with their heads and not do things deliberately,” said Hamilton.
“But after that meeting I don’t really know how to approach the next race. All I know is I’ve got to push.”
Rosberg ultimately had to settle for second behind Red Bull’s Daniel Ricciardo, who has now won three races this season and two on the spin, thrusting himself into contention for the world title again given the war that has broken out in the Mercedes camp.
Ricciardo finds himself 64 points adrift of Rosberg and 35 behind Hamilton.