Former England skipper Stewart reassured Surrey fans this won’t be the last they see of him at The Oval.
“I’ll still be around the place, sat in the stands watching, or if I’m involved in some capacity, very much in the background, then fantastic because you know what this club means to me and my family,” he told Radio 5 Sports Extra.
“But it’s about the boys. I thanked each and every one of them.
“Three in three hasn’t happened since Yorkshire in the 1960s, it doesn’t happen too often and that’s what I’m proud of.
“Led by Gareth Batty and his coaching staff, led by Rory Burns and the players and everyone else associated with the club.”
He added: “Winning one is tough. This is probably the hardest one we’ve had to win for so many reasons.
“Yes we’re the team to beat, you always want to beat the champions, and providing a number of players to England, which we’re very proud of, has made it very challenging at times.
“But to win in the way we’ve won, especially having slipped up at Taunton last week, to come back and beat Durham in the way we did and now to lift the trophy is something very special, so I’m very proud of everyone.”