While Mourinho concedes his side's slow start cost them, the former United coach couldn't help but take a shot at how easily Ole Gunnar Solskjaer's side went to ground.
It was 351 days since Mourinho was sacked at United, but he was back with Spurs and would have fancied a win after Dele Alli's brilliant equaliser just before the break.
Mourinho's winning start to life at Spurs came undone at Old Trafford courtesy of two goals from Marcus Rashford with his decisive strike coming from the penalty spot in the second half. "Sometimes you laugh when you read stories about what I've said and stuff, at least I know the sources are just made up, blatant lies".
Marca add Eriksen's 'situation has given maximum alert to Madrid and, even more so to Tottenham, who runs out of time to renew.' .
But despite being a clear second best, Tottenham edged their way back into the game and were on level terms six minutes before half-time thanks to an audacious piece of skill from the in-form Alli.
The England man looked a pale shadow of himself in the early weeks of the season but has bounced back in style, scoring four times in his past three matches.
Mourinho was sacked as United manager nearly a year ago and this was his first defeat in four games since taking over from Mauricio Pochettino at Spurs last month.
"But the reaction after they scored was also good I felt, it is always a concern because so many times this season we have been winning, gone into a draw and stayed in a draw, but they never gave in, trusted themselves and I think we deserved to win".
Mourinho left United when they were sixth in the Premier League. How can we beat them?
"This is a closed chapter for me", said Mourinho, who has won all three of his matches in charge of Spurs.