Rav Yehudoh says, from the son - רב יהודה אומר משל בן
Summary:
Even if we maintain משל בן that means that the son should spend money and honor his father with this money, but not that he should lose money by honoring his father, if the loss is not actually part of the honor.
But I can derive it because the majority are stoned - ותיפוק לי משום דרובא נסקלין נינהו
Summary:
s'ר"י question was if the נסקלין were the רוב, it would not be necessary to say that they are all נסקל, since שריפה חמורה, but even if they are equally severe, they would still receive סקילה since that it is the רוב.