P.S. In my first response, I had the definitions of sekha, and asekha reversed. The following is correct.
1. Question on the Sekha Sutta (MN53):
Verse 1 describes an asekha ariyasāvaka and verse2 describes a sekha ariyasāvaka.
– Sekha means “one who is on training,” i.e., someone who is on the Noble Path (i.e., above Sotapanna Anugami).
– Asekha means “one who has completed training,” i.e., an Arahant.
The verse “Yato kho, mahānāma, ariyasāvako evaṁ sīlasampanno hoti, evaṁ indriyesu guttadvāro hoti, evaṁ bhojane mattaññū hoti, evaṁ jāgariyaṁ anuyutto hoti, evaṁ sattahi saddhammehi samannāgato hoti” is explained in the “Apaṇṇaka Sutta (AN 3.16)”
2. The verses quoted from the second sutta, “Potaliya Sutta (MN 54)” compare our efforts pursuing sensual pleasures to a dog chewing on a meatless bone.
– “aṭṭhi” is a bone.
– Many suttas discuss this analogy. A dog thinks highly of a bone. It will fight other dogs to take possession of one and spends hours chewing it. It does not benefit from it and only gets tired at the end. Humans seeking sensual pleasures are no different. Such efforts only lengthen the rebirth process, where every birth ends with old age, disease, and death.
– I have discussed this in several posts: “Search Results for: aṭṭhiyati bone”
– Now, you can read the English translation in the link and get a better idea.
3. Please try to point to the place of the sutta using the format I have used (which breaks the sutta into sections/tabs). When you click on tab #, you will get the option to open the sutta at that verse in a different tab on the browser. Then use that link. I revised your links using that method.
– Also, provide the name of the sutta instead of just quoting the sutta number and make Pali verses in italics (select the Pali verse and click “i” on the Text Editor bar.)
– Spend the extra time for the benefit of others. (If the above instructions are unclear on how to open a sutta at a specific place, I can take care of it.)