At-Tawbah 9:84

Wala tusalli AAala ahadinminhum mata abadan wala taqum AAala qabrihiinnahum kafaroo billahi warasoolihi wamatoowahum fasiqoon

And do not pray [the funeral prayer, O Muḥammad], over any of them who has died - ever - or stand at his grave. Indeed, they disbelieved in Allāh and His Messenger and died while they were defiantly disobedient.

And never offer a prayer on any one of them who dies, and do not stand by his grave. They disbelieved in Allah and His Messenger and died while they were sinners.