(CNN)The father and trainer of UFC champion Khabib Nurmagomedov, Abdulmanap, has died, the fighter’s management team confirmed on Friday in a statement sent to CNN.

Abdulmanap died in a Moscow hospital due to complications stemming from Covid-19 infection, according to the RT.com website.

He was aged 57.Ali Abdelaziz, Khabib’s manager wrote on Twitter: “Praise to Allah, who said: ‘All that is on earth will perish, but will abide forever the face of your Lord full of majesty and honor.’“

I ask Allah to bless the deceased with his mercy, and to give your believing hearts patience despite the pain and to bring us together with our loved ones in heaven.”

To Allah we belong and to Him is our return.”