The Great Epic of the Bhārata dynasty 1.192.11

1.192.11

yadyasau brāhmaṇo na syādvindeta draupadīṃ na saḥ |
na hi taṃ tattvato rājanveda kaściddhanaṃjayam || 11 ||

"After the Self-choice was over, all the monarchs (who had come thither), hearing that Draupadi had been united with the Pandavas, set out for their own dominions. And Duryodhana, hearing that Draupadi had selected the owner of white steeds (Arjuna) as her lord, became greatly depressed. Accompanied by his brothers, Aswatthaman, his uncle (Sakuni), Karna and Kripa the prince set out with a heavy heart for his capital. Then Duhsasana, blushing with shame, addressed his brother softly and said, 'If Arjuna had not disguised himself as a Brahmana, he could never have succeeded in obtaining Draupadi. It was for this disguise, O king, that no one could recognise him as Dhananjaya. Fate, I ween, is ever supreme. Exertion is fruitless; fie on our exertions, O brother! The Pandavas are still alive!' Speaking unto one another thus and blaming Purochana (for his carelessness), they then entered the city of Hastinapura, with cheerless and sorrowful hearts. Beholding the mighty sons of Pritha, escaped from the burning house of lac and allied with Drupada, and thinking of Dhrishtadyumna and Sikhandin and the other sons of Drupada all accomplished in fight, they were struck with fear and overcome with despair.