Back in 2015, Chelsea were beaten at home by League 1 side Bradford City. The visitors came back from 2-0 down to beat the Blues 4-2.
Chelsea, however, finished the season as Premier League Champions.
"The FA Cup is absolutely beautiful. I had a big defeat at home and luckily it was in a season where we were champions," Jose Mourinho told reporters.
"So because we were champions we could forget the fact that we lost an FA Cup tie at home. But even that day I managed to be happy for them.
"At the end of the game I was with the feeling about, ‘How is this possible?’ But I remember that I went to their dressing room and I wanted to live myself that crazy happiness.
"And I went to that dressing room and I asked the coach to go inside and I was speaking to the guys in the end and I took pictures with the guys.
"Ten minutes after being knocked out of the FA Cup instead of me crying in my office I was laughing and enjoying with their guys in the dressing room."
Now, Mourinho and his Spurs side are now set to take on 8th division side AFC Marine in a historic FA Cup tie.
The Blues, meanwhile will take on League 1 side Morecambe on Sunday evening.
