To take a bearing, lay your map flat and orient it to true north using your compass. Then, mark your starting point and ...

To take a bearing by map: Holding the compass flat, point the direction of the travel arrow toward the landmark you have ...

If you are lucky enough to be on the line where the declination is 0°, both are already equivalent, or if you orient your map with your compass (see page 00) then you have made the two equivalent.