They have combined nine times already this season, including in Monday's 1-0 win over Burnley, but Spurs manager Mourinho isn't taking all the credit.
"It is an understanding that comes from Maurcio (Pochettino's) time," Mourinho said at Turf Moor. "I don't want all the credit myself, let's share with Mauricio. They play together for a long time, probably a different way because Harry is not always a nine now.
"What pleases me more about them both is that they are two top players but close friends, no jealousy, they both play for the team.
"Credit to them, two great players, two great boys."