Surah At-Taubah (The Repentance), Verse 28

یٰۤاَیُّهَا الَّذِیْنَ اٰمَنُوْۤا اِنَّمَا الْمُشْرِكُوْنَ نَجَسٌ فَلَا یَقْرَبُوا الْمَسْجِدَ الْحَرَامَ بَعْدَ عَامِهِمْ هٰذَا وَاِنْ خِفْتُمْ عَیْلَةً فَسَوْفَ یُغْنِیْكُمُ اللّٰهُ مِنْ فَضْلِهٖۤ اِنْ شَآءَ اِنَّ اللّٰهَ عَلِیْمٌ حَكِیْمٌ ۟

Yaaa aiyuhal lazeena aamanooo innamal mushrikoona najasun falaa yaqrabul Masjidal Haraama ba'da 'aamihim haaza; wa in khiftum 'ailatan fasawfa yughnee kumul laahu min fadliheee in shaaa'; innallaaha 'Aleemun hakeem

“O ye who believe! Truly the Pagans are unclean; so let them not, after this year of theirs, approach the Sacred Mosque. And if ye fear poverty, soon will Allah enrich you, if He wills, out of His bounty, for Allah is All-knowing, All-wise.”

Quran 9:28 (Yusuf Ali Translation)