ANSWER:

This hadeeth is authentic and it talks about overwhelming love to our prophet salla Allahu alaihi wa sallam a source of solace when we remember our loss and inability to see and meet him. 

QUESTION: “Whenever any calamity strikes you,remember your loss in me,& this will make go away your calamity”.If this hadith is authentic How do we remember Prophet Muhammad sallallahu alaihi wasallam when calamity falls upon?(i mean should we say any dya/salutation or just remembering he is not with us anymore & this will go away our calamity?)