Tottenham booked their place in the FA Cup semi-finals at Wembley next month as they outclassed League One Millwall despite an injury to Harry Kane.
The London derby at White Hart Lane proved to be a one-sided affair, with Son Heung-Min scoring a hat-trick, including a superb long range effort just before half time.
Chrisitan Eriksen and Dele Alli were also on the scoresheet, while substitute Vincent Janssen grabbed a goal late on- his first from open play in a Spurs shirt.
The win may have been tainted however, by an apparent ankle injury suffered by Harry Kane early on.
Millwall had come into the game unbeaten in all competitions since December 17 and knocked out three Premier League clubs on their way to the sixth round.
Kane also went into the tie in superb form, with eight goals in his last three domestic games, but had to hobble off after little more than five minutes.
Spurs’ top scorer saw his ankle twist awkwardly under a challenge from Jake Cooper and was replaced by Eriksen.
Millwall were perhaps fortunate not to concede a penalty after 25 minutes when their captain, Tony Craig, used a handful of Dele Alli’s shirt to haul the midfielder over in the box.
The away side were given little opportunity to play themselves into the game and had to settle for occasional opportunities on the counter.
Steve Morison had the Lions’ best chance of the first half, firing wide from 30 yards after he was teed up by Lee Gregory.
On the half-hour mark, Spurs had the lead their dominance had deserved- Millwall’s failure to clear Kieran Trippier’s cross allowed Alli to chest into the path of Eriksen, who fired home low first-time.
Eriksen almost turned provider four minutes later, Victor Wanyama’s header from the Dane’s corner rattled back off the bar.
Tottenham did however find a second before the break- Son Heung-Min cut inside from the right before unleashing a fantastic curling shot with his weaker foot past Tom King in the Millwall goal.
Spurs continued to dominate in the second period and Son put the game beyond doubt after 54 minutes with his second of the afternoon.
Trippier’s perfectly-weighed ball over the top give the South Korean a simple finish.
Alli added to Millwall’s misery on the 70-minute mark, when he turned home Eriksen’s low ball towards the far post.
Vincent Janssen replaced Alli with 15 minutes to play and was able to get his name on the scoresheet- the Dutchman turning home a Ben Davies cross.
There was still time left for Son to grab his hat-trick, when King fumbled the South Korean's tame effort through his own legs in injury time.
The win puts Spurs into the hat for Monday’s semi-final draw, with the ties due to take place on April 23 and 24.
Tottenham return to Premier League action next Sunday, when Southampton visit White Hart Lane.