"Raghu"
// "ts"..... at the sabha, when the pandavas lost Draupadi in the game, Duryodhana called her and asked her to sit in his lap (thighs). Bhima took a wow then to kill him by breaking his thighs..//
Not only that of Bheema...
But also Draupadhi takes a vow that she will tie up her Hair only after applying the Blood from the same Thigh of Duryodana... by hitting at it....
... admixing with the blood by breaking the dirty-hand of Dussaasana... who caused a worst possible insult to any lady ... especially a Queen...by derobing her in the presence of a vast assembly of people..... (on the orders of the King and Brother Duryodana)
Thus all the three commitments were carried out by Bheema...