Is this an idiom: "lay your hands on it"?

[Gemeni]

English Idioms and Expressions, Intermediate level

ESL/EFL Test #19 "Idioms with Hand", question 4

As soon as he laid his hands on all that money, he donated part of it to charitable institutions.

(a) stole
(b) scattered
(c) released
(d) took possession of

English Idioms and Expressions, Intermediate level

ESL/EFL Test #19 "Idioms with Hand", answer 4

As soon as he took possession of all that money, he donated part of it to charitable institutions.

Correct answer: (d) took possession of
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canyou explain it,

Gemeni

[Mister Micawber]

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Lay one's hands on = obtain; take possession of.
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Native English teacher at Mister Micawber's