Polygamy is allowed in Pakistan, but any man intending to marry a second wife must lift this stone for at least one hour before he is given permission to do so.
It is not only lifting the stone, which is 30 GG, but lifting it on your back.
After lifting it for one hour, you prove that you can manage two wives. Then at this point the society will allow you to marry a second wife.
See how this man lifts the stone