A version (with an odd ending) of Posidonius ap. Diogenes Laertius 7.62.
[1] See again alpha 4435. The single word au)lhtri/s means a female piper; but if it is split into two words, au)lh/ can mean a house and tri/s is an adverb meaning thrice. (The accentuation would differ in the two interpretations, however.)
The Stoics distinguished various kinds of amphibolies (a)mfiboli/a is the general term for all ambiguities); this is the first of them, and consists of what the Stoics called common to what is a common unity and to what is divided. In the example, the ambiguity is common to au)lhtri/s both understood as a unity (the piper) and as a divided word: au)lh\ tri/s (the house [has fallen] three times). The ambiguity must have been more evident for a C3-BCE Greek speaker, when the words were written together in a sentence, and in capital letters. The other Stoic ambiguities are also listed and discussed by Galen in his treatise On Fallacies due to language, chapter IV. For an excellent edition of that text, with an English translation and commentary, see Blair Edlow 1977; and on ambiguity in Stoicism, see Atherton 1993.
On amphiboly, see also omicron 299.