Fans who attended the Iran vs South Korea World Cup qualifier in Tehran on Tuesday refused to sing football chants out of respect for Tasu’a.
Iran clinched a 1-0 victory through Sardar Azmoun’s goal to top Group A in qualification for Russia 2018 and fans brought black flags and banners with religious slogans to the Azadi Stadium to respect the first of two mourning days in the Shia Islam calendar.
Fans whistled whenever the visitors had possession and cheered at the final whistle after securing the win.
Visitors South Korea donned black armbands as a gesture to their opponents after tension between the two countries.
Some clergymen had initially voiced their preference for the match to be forfeited, but the match went ahead at the 100,000-seater stadium.
Iranian officials had complained when South Korea captain and Swansea midfielder Ki Sung-yueng likened Teheran to a big prison.
The 27-year-old also claimed some Iranian fans threw bottles and other missiles at his team upon arriving in the capital city wearing air pollution masks.
Iran now sit along at the top of Group Aon 10 points, one point ahead of Uzebekistan, after four matches.
South Korea sit third on seven points, currently outside of the automatic qualification places.