Does the hadith of al-Bara' indicate the permissibility of permanent admonition at the grave?

Question:
Honorable Shaykh, may Allah grant you success, is the hadith of al-Bara' ibn 'Azib cited as evidence for the permissibility of admonition at the grave, considering that the Prophet (peace and blessings be upon him) told them about the grave, its punishment, and its bliss?

Answer:
If they come and the grave has not yet been prepared, and they sit down, then the scholar admonishes them, just as the Prophet (peace and blessings be upon him) did when they brought a funeral and the Messenger (peace and blessings be upon him) was with them, and they found the grave had not been fully prepared. The Messenger (peace and blessings be upon him) sat down, and his Companions sat around him, as if there were birds on their heads from the quietness. And out of respect for the Messenger of Allah (peace and blessings be upon him) at that time, the Messenger (peace and blessings be upon him) admonished them and reminded them. So in such a case, there is nothing wrong with it. However, to make admonition at the grave a permanent practice, there is no evidence for that. Yes.