According to Madhhab:
Khalid has passed away leaving behind two sons that are Baaligh (i.e. reached the age of puberty) and two sons that haven’t yet reached the age of puberty. Before dissolving the estate will it be permissible for the Ulema and other luminaries to partake of meals at Khalid’s residence?
It is not permissible. Yes, if the Baaligh sons feed them from their personal funds there is no harm in doing so.