Amaal Mallik has hit back at music composer duo Sachet-Parampara after they sought his apology for claiming the credit for the 'Bekhayali' song from 'Kabir Singh'. He said, "People put their names on other's songs and say ‘maine banaya (I made this)'," he said. "Do a case of defamation if you feel I have copied your music," Amaal further said.