Is it permissible to offer the funeral prayer (Salat al-Janazah) over a headless body, or over a head only without a body, according to the Hanafi school of thought?

The funeral prayer (Salat al-Janazah) is performed over a corpse if the larger part of the deceased's body is found, such as half of the body and the head. However, it is not performed if half or less of the body is found, according to the Hanafi school of thought. Consequently, the funeral prayer is performed over a corpse without the head, but not over the head alone, according to the Hanafis.