Hamza's younger brother Zaed, 13, suffered gunshot wounds to the leg in the attack. It's them we need to honour. He attended the funeral in a wheelchair.
The Mustafas had moved to New Zealand last year, after spending six years as refugees in Jordan. Mustafa's wife, Salwa, told Radio New Zealand that when the family asked about New Zealand they were told "it's the safest country in the world, the most wonderful country you can go ... you will start a very wonderful life there".
She added: "But it wasn't".
Security personnel walk on the site of funeral services in Christchurch, New Zealand for two victims from last week's mosque shootings.
Families of those killed had been anxiously awaiting word on when they could bury their loved ones.
He said they hope to finish formally identifying most victims by the end of the day although some will take longer.
Junaid Ismail, 36, of New Zealand.
Those aren't the only victims' names that have emerged publicly, however.
"I implore you: Speak the names of those who were lost rather than the name of the man who took them".
"If New Zealand fails to hold the attacker accountable, one way or another we will hold him to account", he said.
The move had raised concerns he would use the trial as a platform for his racist views.
Khaled Mustafa was 44 and Hamza Mustafa was 15.
"Let New Zealand be a place where there is no tolerance of racism, ever". "That's something we can all do".
The Cashmere High students killed were Mustafa, as well as 14-year-old Sayyad Milne.
About 30 people wounded in the attacks remained in hospital as of Tuesday evening.
Australian Brenton Tarrant, 28, a self-described white supremacist, has been charged with murder.
Wearing a headscarf to show respect to Muslims, the prime minister was captured in photos and videos hugging Muslim women to show her support for the Muslim community in New Zealand.
Somehow, in the face of absolute terror, Jacinda Ardern has united New Zealand - and the rest of the world - to share in her strength.
Within three days, she had met with her cabinet to discuss imminent reforms to the gun laws governing New Zealand, to be announced ten days later.
Dressed scruffily in grey tracksuit pants, a dirty blue T-shirt and striped socks but no shoes, Arps listened intently while District Judge Stephen O'Driscoll told him he was not required to enter a plea.
She also noted that "there have rightly been questions around how this could have happened here". The judge made an additional suppression order regarding the police summary of facts in the case, limiting reporting of the accusations to the charges themselves.
Police Commissioner Mike Bush said Wednesday that authorities believe they arrested the shooter while he was making his way to a third location that he planned to attack. Police continue to guard mosques across the country.
Abizar Valibhai, of Christchurch, said Wednesday's burials marked an important moment.