This proverb means that past actions, such as saying goodbye or consuming a meal, cannot be considered present obligations or responsibilities. In other words, once an action is done, it should no longer weigh on the minds of those involved. The equivalent English proverb could be: ‘Let bygones be bygones.’ It emphasizes that past commitments or duties should be fulfilled in the moment and not be continually revisited as debts or blames from the past.