The Muslim answer holds up. Do not lead with this one.
That the Quran promises martyrs 72 virgins in paradise.
The number 72 appears nowhere in the Quran. The Quran promises houris — created, wide-eyed, virginal companions (Quran 56:22-24; 44:54; 55:56; 78:33) — with no count attached.
In a hadith. Jami at-Tirmidhi 1663 lists the martyr's six rewards, including marriage to "seventy-two wives from al-hur al-'ayn." The word is wives, not virgins.
It is graded sahih or hasan in the mainstream collections. But it is a hadith claim, not a Quranic one.
Say the Quran promises 72 virgins and your friend truthfully replies that it does not. You lose on a citation error, and the real point escapes with it.
Be exact and the substance survives. The Quran's paradise is openly physical and sexual — that is this site's houris case.
And the 72-wives detail for martyrs is in a graded hadith. Cite it as Tirmidhi 1663 and the technicality defence evaporates.
"You are right that it is not in the Quran. It is Tirmidhi 1663.
May we look at that?"



Do not use this: the number 72 is not in the Quran at all.
The correction is that the number 72 appears nowhere in the Quran. The Quran promises houris — created, wide-eyed, virginal companions (56:22-24; 44:54; 55:56; 78:33) — without a count.
The 72 figure is hadith. Jami at-Tirmidhi 1663 lists, among the martyr's six rewards, marriage to seventy-two wives from al-hur al-'ayn. The wording is wives, not virgins. It is graded sahih or hasan in mainstream collections. But it remains a hadith claim, and not a Quranic one.
Drop the slogan and cite Tirmidhi 1663: precision wins the same point.
Here is why it backfires. Say the Quran promises 72 virgins and the Muslim truthfully replies that it does not. You lose on a citation error, and the real point escapes with it.
The substance survives precision. The Quran's paradise is explicitly material and sexual, which is this site's houris case. And the 72-wives detail for martyrs is in a hadith graded sahih. Cite it as Tirmidhi 1663 and the technicality defence evaporates. Precision converts a losing slogan into an unanswerable citation.