Is the selling contract legal when the selling price is fixed as a monthly payment with a written penalty clause of increasing the value of instalment in case the buyer fails to pay on time or delays the payment? From Aboudhia Taki Answer: The contract of selling can be set for an upfront payment and it can also be as a deferred payment i.e. instalments. But it is not permissible to increase the price due to the failure of the buyer to make the payment. If the failure of payment is by a wealthy person who is delaying; he will be punished by the state, a suit will be filed against him for delaying due to the saying of the Prophet صلى الله عليه وسلم as narrated by Abu Dawoud on the authority of Amr bin ash-Shreidi from his father from the Messenger صلى الله عليه وسلم said: «لَيُّ الْوَاجِدِ يُحِلُّ عِرْضَهُ، وَعُقُوبَتَهُ» "The delaying (in payment) by the wealthy (who is able to pay) permits the verbal attacks (to be called a delayer) on him and his punishment...
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