They had made a verbal agreement to sell.

他们达成了口头售货协定。

《牛津词典》

Verbal agreement can be binding.

口头协议也有约束力。

youdao

I wrote a memorandum to confirm our verbal agreement.

我写了份备忘录以确认我们的口头协议。

youdao

So basically, we're stuck with this verbal agreement and we both have an incentive to cheat and produce more whatever it is, sugar water.

但不管怎样,在这个口头协议不起作用,我们都有违约,生产更多这种糖水的动机

耶鲁公开课 - 博弈论课程节选

He claimed Robert Cohen had made a verbal agreement to give over half of his estate to Claudia.

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Barter agreements can be written and quantified or they can remain loose, with a verbal agreement and a handshake.

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William de Bourton and Matilda, the daughter of William Tylli, were all set to get married and had a verbal agreement.

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