One of the most powerful lines in one of the DNC’s most emotional speeches came when Khizr Khan, the Muslim father of a U.S. Army captain killed in Iraq, told Donald Trump, “You have sacrificed nothing!” Now, in his first response to Khan’s address, during an interview with ABC News’ George Stephanopoulos set to air Sunday morning, Trump responded to that line by saying,“I think I've made a lot of sacrifices. I work very, very hard.” Trump also questioned whether Khan’s wife, who stood silently at her husband’s side at the podium, was “allowed” to speak. Ghazala Khan did speak out during an interview on MSNBC on Friday night, thanking all Americans who “listened from their heart” to her husband’s speech.