وَمَنْ رَأَى أَحَدَ ثَوْبَيْنِ فَاشْتَرَاهُمَا، ثُمَّ رَأَى الْآخَرَ جَازَ لَهُ أَنْ يَرُدَّهُمَا
Translation: If a buyer saw one of two garments, bought both together, and then viewed the other, the buyer may return both garments.
The transaction is a single combined purchase of two garments, one unseen at the time of agreement. On viewing the second, the buyer may return both.
Example: two shawls are bought together for Rs 6,000; the buyer saw only one. Once the second is viewed, the stated rule allows returning the pair.
Do not misread the clause as confining the option to the unseen garment alone.