Sahih Bukhari Volume 2, Book 23, Hadith 1238

حَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ، حَدَّثَنَا مَهْدِيُّ بْنُ مَيْمُونٍ، حَدَّثَنَا وَاصِلٌ الأَحْدَبُ، عَنِ الْمَعْرُورِ بْنِ سُوَيْدٍ، عَنْ أَبِي ذَرٍّ ـ رضى الله عنه ـ قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ أَتَانِي آتٍ مِنْ رَبِّي فَأَخْبَرَنِي ـ أَوْ قَالَ بَشَّرَنِي ـ أَنَّهُ مَنْ مَاتَ مِنْ أُمَّتِي لاَ يُشْرِكُ بِاللَّهِ شَيْئًا دَخَلَ الْجَنَّةَ ‏"‏‏.‏ قُلْتُ وَإِنْ زَنَى وَإِنْ سَرَقَ قَالَ ‏"‏ وَإِنْ زَنَى وَإِنْ سَرَقَ ‏"

Narrated By Abu Dhar : Allah's Apostle said, "Someone came to me from my Lord and gave me the news (or good tidings) that if any of my followers dies worshipping none (in any way) along with Allah, he will enter Paradise." I asked, "Even if he committed illegal sexual intercourse (adultery) and theft?" He replied, "Even if he committed illegal sexual intercourse (adultery) and theft."