From the martyrdom account of Saint Polycarp, a disciple of St. John the Apostle, written ca. AD 150.
"The centurion then, seeing the strife excited by the Jews, placed the body in the midst of the fire, and consumed it. Accordingly, we afterwards took up his bones, as being more precious than the most exquisite jewels, and more purified than gold, and deposited them in a fitting place, whither, being gathered together, as opportunity is allowed us, with joy and rejoicing, the Lord shall grant us to celebrate the anniversary of his martyrdom, both in memory of those who have already finished their course, and for the exercising and preparation of those yet to walk in their steps."
Source: The Martyrdom of Polycarp Man, the Apostles really did a terrible job teaching their disciples, didn't they?
We simply don’t know the accuracy of this account.
Nor is it evidence it was practiced, taught, and certainly never in Scripture.