Mourners gathered in Doha on Friday to hold funeral prayers for slain Hamas leader Ismail Haniyeh as Iran and its regional allies vowed to retaliate against Israel.

With the bodies of Haniyeh and his bodyguard in coffins draped with Palestinian flags, men knelt and prayed while senior leaders of Hamas’ Qatar-based political office paid their respects to Haniyeh’s family.

That included two men seen as his possible successors: Khalil Al-Hayya, a Hamas senior official and the head of Palestinian Islamic Jihad, and former Hamas chief Khaled Mashal, a close Haniyeh aide.

Al-Hayya told family members that Haniyeh was “no better or dearer” than the children killed in Gaza. Some 39,480 Palestinians have been killed throughout the war, according to Gaza’s Health Ministry, which does not differentiate between civilians and combatants.

“We are sure that his blood will bring out victory, dignity and liberation,” he said.

The funeral came a day after Israel said it had confirmed that the head of Hamas’ military wing, Mohammed Deif, was killed in an July 13 airstrike in Gaza, and a few days after Israel said it had killed Hezbollah commander Fouad Shukur in a strike in Lebanon.

Hamas has yet to comment and had previously claimed Deif survived last month’s targeted airstrike.

Israel has yet to claim or deny a role in the killing of Haniyeh, but Hamas and its allies say it was responsible. They said he was killed in a missile strike on a Tehran guesthouse where he was staying after attending the inauguration of Iran’s new president.