Buying a computer for profit: Is he sinful if one of his heirs uses it in a way that Allah has not made lawful?

The questioner : Yes, peace be upon you, and upon you be peace. How is the Shaykh? I am well, praise be to Allah. If Allah wills, I intend to buy a computer. Good. A computer can be used for good and it can be used for evil. Yes. Right now, if Allah wills, I hope that by Allah’s permission I will be able to control it and use it for good. But the heirs, or those who come after me, if Allah wills, might use it for evil. Is there a sin on them?

The Shaykh : There is no sin on you, then.

The presenter : May Allah reward you with good, my uncle the Shaykh.

The Shaykh : Because you used it in what Allah has made lawful, and the heirs after you will either use it in what Allah has made lawful, or they will use it in what Allah has forbidden.

The presenter : May Allah honor you. I am leaving.

The Shaykh : If they use it in what Allah has forbidden, did you buy it for the purpose of them using it in what Allah has forbidden? Praise be to Allah.

The presenter : May Allah reward you with good, O Shaykh, peace be upon you.

The Shaykh : And upon you be peace.