Al-Kasama Te Al-Aih Fil Jahirya

The strongest opinion is that the loath means, mara jahajani man wuddu'aifidawahu. There are signs that actually point out that this person is the one who committed it. So it's not just mere claim. It's something that the prophet took from the pre-Islamic, ah, yani jahirya,. And he affirmed it, al-a-sa'al tous-salam.