Rubin Kazan's 23-year-old striker Sardar Azmoun has announced his young retirement from international football, naming his mother's disease as the reason for the "painful" decision.
Azmoun, who has been playing his football in Russia since 2013, scored 23 goals in 36 matches for Iran since making his senior debut in 2014.
"It was a great honor for me to play for the national team and I will be proud of myself all my life," said Azmoun on his Instagram account.
"Unfortunately, despite my interest and my heart's desire, I have decided to say goodbye to my country's national team. It is definitely the most painful decision for a 23-year-old player," he added.
"My mother's serious illness was just over, and I was happy. But, unfortunately, the insults neither me nor my teammates deserved aggravated her illness, which compels me to make this difficult choice. I choose my mother."
Iran were knocked out of the FIFA World Cup on Monday after only toughing out a 1-1 draw against reigning European champions Portugal in their final Group B game.