Conducting business during the Hac season is permissible according to explicit Kur'anic permission. Allah says: 'There is no sin upon you for seeking bounty from your Lord (during Hac)' (Al-Baqarah, 2:198). This verse was revealed because the early Muslims felt hesitant about trading during the sacred Hac season, thinking it might diminish their worship. The Kur'an explicitly removed this concern.
Sheikh Ibn Baz stated that buying, selling, and trading during the Hac season is permissible as long as it does not interfere with the performance of the Hac rites. The companions of Hz. Peygamber engaged in commerce during the Hac season, and the markets of Mekke were active during this time. Ibn Abbas reported that Dhul-Majaz and Ukaz were trade markets during Hac in the pre-Islamic and Islamic periods.
Sheikh Al-Fawzan clarified an important distinction: a haci who performs Hac and also conducts some business on the side is not blameworthy. However, a person who makes the trip primarily for business and performs Hac as a secondary activity is acting against the spirit of the hac ibadeti. Hac should be the primary intention, with business being incidental. The haci should not let trade distract them from the rites, from making dua at Arafat, from the remembrance of Allah, or from the other sacred moments of Hac.