If the fourteenth falls on the Sabbath, everything [sc. Leaven] must be removed before the Sabbath
And burnt. That makes sense. But what about trumah the special offerings which are reserved for the priests?
and of the clean [terumah] food for two meals is left over, so as to eat until four hours
That is, one meal for Friday evening and one meal for Saturday – for the priest.
Said they to him: Clean [terumoth] should not be burnt, in case eaters may be found for them?
For example if priest should come visiting.
He replied: They have already sought [eaters] but not found [them].
[But maybe] they have spent the night outside the [city] wall?
Then on your reasoning, he retorted, even [trumah] in suspense should not be burnt, lest Elijah come and declare them clean?
Said they to him, it has long been assured to Israel that Elijah will come neither on the eve of the Sabbath nor on the eve of Festivals, on account of the trouble.
Elijah, who is supposed to come not only to announce the coming of the Messiah, but also to clear up all kinds of legal doubts and misunderstanding, is considerate enough not to come at the beginning of Shabbat or Festivals, because it would cause all kinds of inconvenience. You go, Elijah!
(One other thing on the page which doesn’t relate to the above: when the keepers of a charity have more goods or food than they can distribute – that cannot keep it or even sell it to themselves. Based on and ye shall be guiltless towards the Lord, and towards Israel [Num. 32:22] – avoiding even the appearance in impropriety.)