Is an additional sum due to the seller if requested a week after purchasing the wood and receiving the invoice?

If the seller claims an error in calculating the price, and this is proven, the buyer is obligated to pay the remaining amount. However, if the seller claims not to have received the full price recorded in the invoice, then if the buyer confirms this, the buyer is obligated to pay. Otherwise, the buyer's statement, accompanied by an oath, is accepted, and the invoice here serves as a witness. If the seller claims an error in the price, stating that its real price is higher than what was mentioned in the invoice, scholars have differed on this matter. Some do not accept the seller's statement without evidence, while others accept it with the seller's oath and give the buyer the choice between returning the merchandise or paying the increase. The apparent ruling is that if the buyer confirms the seller's claim, the buyer is obligated to pay the price. If the buyer does not confirm it and the seller has evidence, the buyer is given the choice between paying the increase or returning the sold item, unless the buyer counters with evidence, in which case both pieces of evidence cancel each other out, and they both take an oath. If the merchandise is still present, they should return it to each other. If it is damaged, the value of a similar item should be returned.