It may be claimed that the real consent of the doer of the...
It may be claimed that the real consent of the doer of the act is lacking in both the cases. Just as a person who sells his house or business under a threat, is not actually willing to do so in his heart of hearts, similarly a person who is forced by circumstances (for example, has to meet the expenses of the treatment of a disease) to sell his house or business, is also not willing in his heart of hearts.
A man, who is forced to sell his house because he has to pay for the treatment of his ailing son, cannot be happy with this transaction. He must be deeply grieved. As far as the willingness is concerned, the position is not changed by the fact that the man under threat wants to ward off a danger and the man pressed by the circumstances wants to fulfil a pressing need.
It also makes no substantial difference that in the case of coercion some human hand is directly involved in the form of some tyrant, and in the case of compulsion by force of circumstances, human hand is involved only indirectly in the shape of exploitation, colonialism etc. The fact is that the reason why Islam makes a difference between a man under duress and a man pressed by circumstances and regards the acts of the former as invalid and of the latter as valid lies somewhere else.
Both the man under duress and the man pressed by circumstances have an urgent need. The need of the man under duress is to avert the mischief of the tyrant which is possible only by taking the action required by him. Here Islamic law comes to the aid of the man under duress and declares that the action imposed on him is illegal and void. On the contrary the man pressed by circumstances is in direct need of money which he tries to obtain through a desperate transaction.
Here again the law comes to the aid of the afflicted person and declares the transaction legal and valid. If it had declared it illegal, the result would have, been to the disadvantage of the afflicted person. Suppose in the above instance the sale of the house is declared void. The result will be that neither the buyer will become the owner of the house, nor the seller will become the owner of the money which he badly needs for the treatment of his son.
That is why the jurists say that to declare a transaction carried out under duress as illegal is a favour to the man coerced. But to declare a desperate transaction as illegal not being to the advantage of the man hard-pressed by circumstances, will not be a favour to him.