فإن هلك بعض المبيع جازت الإقالة في باقيه
Translation: If only part of the goods has been destroyed, iqalah is permissible in the surviving part.
The wording fi baqihi means complete loss of the entire transaction is not the only possibility. Iqalah may apply to the surviving portion of the goods.
Example:
1. Ten identical glasses cost Rs 1,000 in one sale.
2. Three are completely broken; seven survive.
3. Iqalah can concern the seven surviving glasses.
For equal-priced identical units, a teaching illustration allocates Rs 700 to the seven. Allocation among differently valued articles requires further legal analysis.