A woman once came to Imaam Abu Hanifah (rahimahullah), wishing to purchase a silken cloth. When Imaam Abu Hanifah (rahimahullah) showed her a certain cloth, she said to him, “I am a weak woman, and it is an amaanah (with which I have been entrusted to purchase this cloth), so please sell me this cloth for the amount that it costed you.” Imaam Abu Hanifah (rahimahullah) immediately said to her, “Take it for four dirhams.” The woman could not believe that Imaam Abu Hanifah (rahimahullah) was prepared to sell her the silken cloth for such a low price, and thus exclaimed, “Do not joke with me, as I am an old woman!”

Imaam Abu Hanifah (rahimahullah) explained to her, “I purchased two cloths. I sold one of the two cloths for a price which covered the entire capital with which I purchased both cloths besides four dirhams. Hence, this cloth now remains with only four dirhams of the capital amount outstanding. (Therefore, I have sold the second cloth to you for four dirhams.)”

(Akhbaar Abi Hanifah wa Saahibayhi lis-Saymari pg. 50-51)