Help - Handkerchief Tree

[summer]

A friend has brought a fruit/seed pod from a Handkerchief tree for me to have a go at growing. It looks like a very hard nut and I don't know what to do with it?
Do I open it and take out seeds? Or just plant it in it's entirety? Someone help pleae?

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Summer

[PAULW]

Propagation

Propagated readily from seed after an extended period of dormancy but will not flower for up to 10 years from germination. Sow the whole fruit, as soon as it is ripe, in a seedbed or containers in an open frame. Germination normally occurs in spring after two winters. In the wild it has been noticed that all the seeds germinate at once with one eventually crowding out the others.

[summer]

Thank you PaulW. I have now sowed the whole fruit so will just have to be patient for a while.

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Summer