In Pakistan when people wanna do things straight they are not able to do it. My mom is sick and I sold a plot in DHA to get money for my ailing mom- after completing all the formalities required by the bank only to be told that the state bank of Pakistan does not allow the international outward transfer.
So there are only 2 ways.
One as guided above open an account in PKR and deposit the par order, and then open a dollar account and transfer from PKR account to dollar account. (this may take up to 15 days)
Even while transferring from the dollar account there are a lot of documents that need to be submitted, and prevailing the current situation in Pakistan this transfer will probably be rejected again by the state bank.
The second way is through hundi- and this could be successful only if you know someone who has reliable credentials.
unfortunately, Pakistan has stopped all international transfers due to money laundering. But the government is ignorant enough not to understand that the launderers never used to use the bank transfer channels.
Important note in order to do hundi you will need to withdraw a huge amount of cash - this is very dangerous to carry out cash in Pakistan - so in advance rest in peace.
Again a common man has been affected.