Sahih al-Bukhari Book 34, Hadith 52
Here (i.e. in Mecca) there was a man called Nawwas and he had camels suffering from the disease of
excessive and unquenchable thirst. Ibn `Umar went to the partner of Nawwas and bought those
camels. The man returned to Nawwas and told him that he had sold those camels. Nawwas asked him,
"To whom have you sold them?" He replied, "To such and such Sheikh." Nawwas said, "Woe to you;
By Allah, that Sheikh was Ibn `Umar." Nawwas then went to Ibn `Umar and said to him, "My partner
sold you camels suffering from the disease of excessive thirst and he had not known you." Ibn `Umar
told him to take them back. When Nawwas went to take them, Ibn `Umar said to him, "Leave them
there as I am happy with the decision of Allah's Messenger (ﷺ) that there is no oppression . "
`Ukaz, Majanna and Dhul-Majaz were markets in the Pre-Islamic period. When the people embraced Islam they considered it a sin to trade there. So, the following Holy Verse came:-- 'There is no harm for you if you seek of the bounty of your Lord (Allah) in the Hajj season." (2.198) Ibn `Abbas recited it like this.
We set out with Allah's Messenger (ﷺ) in the year of Hunain, (the Prophet (ﷺ) gave me an armor). I sold that armor and bought a garden in the region of the tribe of Bani Salama and that was the first property I got after embracing Islam.