With an eye on Purvanchali votebank in Delhi, the ruling AAP and the Opposition BJP on Friday crossed swords over the honour and welfare of migrants from Bihar and east Uttar Pradesh as both parties claimed to be their true well-wisher. While the BJP women wing held a protest outside AAP leader Arvind Kejriwal's house over his "anti-Purvanchali" comments, the former Chief Minister countered by claiming that he had given a dignified life to Purvanchalis by providing civic and health facilities in unauthorised colonies and slums where they live.