LONDON — They had been fasting together for more than two weeks: Nazanin Zaghari-Ratcliffe, a British-Iranian woman detained in Tehran, who went on a hunger strike in prison, and her husband, Richard Ratcliffe, who was outside the Iranian Embassy in London.

On Saturday, the 15th day of their campaign, they suspended the strike demanding Ms. Zaghari-Ratcliffe’s unconditional release.

Mr. Ratcliffe told BBC Radio’s “Today” program on Saturday that he had talked to his wife on the phone, and that she had told him she would end the hunger strike.

“It was getting hard for me, but I’m sure it was much harder for her,” Mr. Ratcliffe said. “I’m relieved because I wouldn’t have wanted her to push it much longer.”