The word(s) "sell" appears 2 time(s) in 2 verse(s) in Quran in Saheeh International translation.

(1) And of the people is he who sells himself, seeking means to the approval of Allah. And Allah is kind to [His] servants.

(سورة البقرة, Al-Baqara, Chapter #2, Verse #207)
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(2) So let those fight in the cause of Allah who sell the life of this world for the Hereafter. And he who fights in the cause of Allah and is killed or achieves victory - We will bestow upon him a great reward.

(سورة النساء, An-Nisaa, Chapter #4, Verse #74)
(Arabic, Transliteration, Urdu (Ahmed Ali), Urdu (Jalandhry), Farsi, Yusuf Ali, Shakir, Picthal, Mohsin Khan, French, Spanish, Indonesian, Malay, German, Bosnian, Russian, Dutch, Italian, Portuguese, Tafsir - Jalal ad-Din, Tafsir - King Fahad Quran Complex)