Leinster centre Brian O'Driscoll was hailed by his team-mates after retiring from his playing career with another RaboDirect PRO12 title under his belt.
The veteran Irish international, who was forced to leave the field prematurely due to injury, watched his side beat Glasgow Warriors 34-12 in Dublin.
Leinster's scorers were Zane Kirchner (2), Shane Jennings and Gordon D'Arcy, as Jimmy Gopperth kicked 14 points to secure the trophy on Saturday.
And coach Matt O'Connor has acknowledged his side had been motivated by the chance to send O'Driscoll out in fitting fashion, which they did.
"Brian O'Driscoll has been immense. They don't make them like that any more and we are just privileged to have him in the environment," he said.
"It's not all about one guy but there's no doubt everyone here wanted to make sure he, Leo and the other guys who are leaving us went out in the right way.
"We have worked really hard all year. They deserve it because they worked really hard throughout the season.
"It was a tough battle. We knew that it would be and we needed to put our best performance to beat Glasgow and it is no disgrace to lose to our team."
Skipper Jamie Heaslip added: "It was great for us to be able to send off a guy who has given so much to Leinster rugby and to Irish rugby with a trophy.
"He has been unbelievable to play alongside.
"We knew it would not be easy and, to be fair to Glasgow, I don't think the score reflected the way the two sides played, but we are over the moon to finish like that."