Yusuf is Rescued from the Well and sold as a Slave

Allah narrates what happened to Yusuf, peace be upon him, after his brothers threw him down the well and left him in it, alone, where he remained for three days, according to Abu Bakr bin `Ayyash. Muhammad bin Ishaq said, "After Yusuf's brothers threw him down the well, they remained around the well for the rest of the day to see what he might do and what would happen to him. Allah sent a caravan of travelers that camped near that well, and they sent to it the man responsible for drawing water for them. When he approached the well, he lowered his bucket down into it, Yusuf held on to it and the man rescued him and felt happy,

يبُشْرَى هَـذَا غُلاَمٌ

Verse 20 begins with the words: وَشَرَ‌وْهُ بِثَمَنٍ بَخْسٍ دَرَ‌اهِمَ مَعْدُودَةٍ (And they sold him for a paltry price, for a few silver-coins, and they were disinterested in him). In Arabic, the word: شِرَا (shira' ) is used for buying and selling both. The probability of both meanings exists here. If the pronoun is reverted back to the brothers of Sayyidna Yusuf (علیہ السلام) ، it will mean selling - and if applied to the people of the caravan, it would mean buying. Thus, the sense would be: ` the brothers of Yusuf sold him - or, the people of the caravan bought him - for a paltry price, that is, for a counted few dirhams in return.'

Al-Qurtubi says: The Arab traders used to transact deals involving big amounts by weight while, for amounts not more than forty, they would go by count. Therefore, the word: مَعْدُودَةٍ (ma` dudah: few) used with: دِرَاھُم (darahim: plural of dirham: silver-coins) tells us that the count of dirhams was less than forty. Ibn Kathir, citing the authority of Sayyidna ` Abdullah ibn Masud ؓ ، has written that the deal was closed at twenty dirhams which the ten brothers had divided among themselves at the rate of two dirhams per person. As for the exact amount of dirhams, reported there are other narrations as well which put them as twenty two and forty. (Ibn Kathir)