Every distinct wording since 2010, newest first.
September 24, 2021 · Innistrad: Midnight Hunt
If a bestowed Aura becomes unattached, it ceases to be bestowed. If a bestowed Aura is attached to an illegal object or player, it becomes unattached and ceases to be bestowed. This is an exception to rule 704.5m.
April 22, 2021 · Strixhaven
If a bestowed Aura phases in unattached, it ceases to be bestowed. See rule 702.26, “Phasing.”