The word(s) "thunoobakum" appears 3 time(s) in 3 verse(s) in Quran.

(1) Qul in kuntum tuhibboona Allaha faittabiAAoonee yuhbibkumu Allahu wayaghfir lakum thunoobakum waAllahu ghafoorun raheemun

(سورة آل عمران, Aal-i-Imraan, Chapter #3, Verse #31)
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(2) Yuslih lakum aAAmalakum wayaghfir lakum thunoobakum waman yutiAAi Allaha warasoolahu faqad faza fawzan AAatheeman

(سورة الأحزاب, Al-Ahzaab, Chapter #33, Verse #71)
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(3) Yaghfir lakum thunoobakum wayudkhilkum jannatin tajree min tahtiha alanharu wamasakina tayyibatan fee jannati AAadnin thalika alfawzu alAAatheemu

(سورة الصف, As-Saff, Chapter #61, Verse #12)
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