The Hadit of Amdaus, Is Not Hadit

The hadit of amdaus is a statement on asia that he's telling his children, that when he's telling him what to do after he dies. The phrase "stay at my grave for the length of time it takes to slaughter an animal and distribute the meat" is found in other hadith as well. It must have been a unit of time for them, right? I mean, they don't have 20 minutes on a watch. Anble would say an expert slaughterer can do it all in half an hour. Is that reasonable? Wriht, you know, take a goat and half an hour, just do it and cut it up, right? In