At-Tawba 9:28

O you who believe, the polytheists are impure[23], so do not let them come near the Sacred Mosque after this year. If you fear poverty, Allah will enrich you out of His bounty[24], if He wills. Indeed, Allah is All-Knowing, All-Wise.

[23] Impurity here means: disbelief, vile manners and unholy character.
[24] Because the pilgrimage site was the major trading season in Arabia at that time.

O you who have believed, indeed the polytheists are unclean, so let them not approach al-Masjid al-Ḥarām after this, their [final] year. And if you fear privation, Allāh will enrich you from His bounty if He wills. Indeed, Allāh is Knowing and Wise.

28. O you who believe (in Allâh’s Oneness and in His Messenger Muhammad صلى الله عليه وسلم)! Verily, the Mushrikûn (polytheists, pagans, idolaters, disbelievers in the Oneness of Allâh, and in the Message of Muhammad صلى الله عليه وسلم) are Najasun (impure).[5] So let them not come near Al-Masjidal-Harâm (at Makkah) after this year; and if you fear poverty, Allâh will enrich you if He wills, out of His Bounty. Surely, Allâh is All-Knowing, All-Wise.

[5] (V.9:28) Their impurity is spiritual and physical: spiritual, because they don’t believe in Allâh’s Oneness and in His Prophet Muhammad صلى الله عليه وسلم ; and physical, because they lack personal hygiene (filthy as regards urine, stools and blood). And the word Najas is used only for those persons who have spiritual impurity e.g. Al-Mushrikûn

O ye who believe! The idolaters only are unclean. So let them not come near the Inviolable Place of Worship after this their year. If ye fear poverty (from the loss of their merchandise) Allah shall preserve you of His bounty if He will. Lo! Allah is Knower, Wise.