「须菩提！于意云何？若有人满三千大千世界七宝以用布施，是人以是因缘，得福多不？」「如是，世尊！此人以是因缘，得福甚多。」「须菩提！若福德有实，如来不说得福德多；以福德无故，如来说得福德多。」
逐句解释
若有人满三千大千世界七宝以用布施，是人得福多不？
这个问题在经中已经出现过多次，但每次都在不同的语境中展开。这次，佛陀不是要对比更大的功德，而是要从根本上解释「福德」是什么——或者更准确地说，为什么它能被称为「多」。
If someone filled the three-thousand-fold world with treasures and gave them away — do they get much merit?
This question has appeared in earlier chapters, but each time with a different purpose. Previously it was used for comparison — this merit is less than that. Here the comparison disappears and something more fundamental is asked: why can merit be called 'much' at all? The answer the Buddha gives is philosophically radical — it hinges on the emptiness of merit itself.
若福德有实，如来不说得福德多；以福德无故，如来说得福德多
这是第十九章最核心、也最难理解的一句话。意思是：正因为福德没有固定的实体，所以如来才说福德很多。如果福德是一个固定的、可以积累的东西，那它就有上限。但因为它是空的、无自性的，所以可以无限——「无」反而是「多」的根据。这是空性哲学最精妙的体现之一。
If merit had fixed substance, the Tathagata would not say there is much merit. It is precisely because merit has no fixed substance that the Tathagata says there is much merit.
This is one of the most philosophically precise statements in the sutra. If merit were a solid, fixed thing that accumulated like coins in a jar, it would be limited by its container — it could fill up, overflow, be measured. But merit has no inherent existence. It arises from causes and conditions, leaves no permanent residue in a 'merit-account,' and cannot be located or counted as a substance. Paradoxically, this is precisely what makes it 'much': emptiness has no ceiling. What is not bounded cannot be exhausted. The limitlessness of merit comes from its emptiness, not despite it.
总结 · Summary
第十九章是《金刚经》中篇幅最短的章节之一，但哲理极深：福德之所以能被称为「多」，正是因为它没有固定的实体。如果福德是一个可以积累的固定物，它就有上限；正因为它是空的，所以无边无际。这是空性哲学的精髓：「无」不是虚无，而是无限的根基。
Chapter 19 is brief but philosophically precise: merit can be called 'much' precisely because it has no fixed substance. If merit were a solid accumulation, it would be bounded. Because it is empty of inherent existence, it has no ceiling — its limitlessness comes from its emptiness. This is one of the sutra's sharpest expressions of the Mahayana insight: emptiness is not the absence of value, but the very ground of limitless value.