Can anyone show me the exact rules, please?
20) DRIVING
20.1 The driver must drive the car alone and unaided.
20.2 Drivers must use the track at all times. For the avoidance of doubt the white lines defining the track edges are considered to be part of the track but the kerbs are not.
A driver will be judged to have left the track if no part of the car remains in contact with the track.
Should a car leave the track the driver may re-join, however, this may only be done when it is safe to do so and without gaining any lasting advantage. At the absolute discretion of the race director a driver may be given the opportunity to give back the whole of any advantage he gained by leaving the track.
20.3 More than one change of direction to defend a position is not permitted. Any driver moving back towards the racing line, having earlier defended his position off-line, should leave at least one car width between his own car and the edge of the track on the approach to the corner.
20.4 Any driver defending his position on a straight, and before any braking area, may use the full width of the track during his first move, provided no significant portion of the car attempting to pass is alongside his. Whilst defending in this way the driver may not leave the track without justifiable reason.
For the avoidance of doubt, if any part of the front wing of the car attempting to pass is alongside the rear wheel of the car in front this will be deemed to be a 'significant portion'.
20.5 Manoeuvres liable to hinder other drivers, such as deliberate crowding of a car beyond the edge of the track or any other abnormal change of direction, are not permitted.
20.6 As soon as a car is caught by another car which is about to lap it during the race the driver must allow the faster driver past at the first available opportunity. If the driver who has been caught does not allow the faster driver past, waved blue flags will be shown to indicate that he must allow the following driver to overtake.
I've bolded out the parts that applies to this particular Hamilton v Rosberg incident, as that is the main thing that's being discussed - and because Hamilton jerked to the right mid-corner.
Some are advocating the idea to be obliged to allow all-4-wheels space for the car on the outside of a corner? (we are talking corners, not straights)
You realise if that was a strict rule then Hamilton would just outbrake everyone in F1 and they would have to lift according to the rules? He would then abuse this rule and make overtaking a piece of cake for himself. And some would then cry he is sticking his nose where it doesn't belong
If he is far enough on the side/close enough to be able to outbrake, then he would get on the side. That doesn't mean the driver in 'front' have to lift, just give enough room. There is a big difference between 'lift' and 'give room'.