Shiv Sena on Monday hit out at its ally Bharatiya Janata Party over their humiliating defeat in the Bihar Assembly elections.The Grand Alliance on Sunday routed the BJP-led NDA in Bihar to score a landslide two-thirds majority, giving Chief Minister Nitish Kumar a third term in office in a battle in which Prime Minister Narendra Modi staked his all.An editorial in Sena’s mouthpiece Saamna said that the lesson from the Bihar verdict is ‘humility’. “We are grounded. Those who were not, had to bite the dust,” it said.