EXPLAINING THE HADEETH " PUSH THEM (JEWS AND CHRISTIANS) TO THE NARROWEST PART OF THE ROAD"

Question : Kindly explain the hadeeth :

The Prophet (peace and blessings of Allaah be upon him) said: “Do not initiate the greeting of salaam to a Jew or Christian, and if you meet them in the street, push them to the narrowest part of the road."