Baha'u'llah visited a Baha'i home and found it dirty. He revealed a tablet.

O My handmaid! Know thou that We have raised up bounty itself in the form of this Tablet and sent it unto thee, that thou mayest glory therein amidst creation. We entered thine abode whilst thou wert oblivious thereof, and We perceived not from it the sweet savour of holiness. Thus doth the All-Informed apprise thee.

Cleanse ye, O people, your homes, and purify your attire from whatsoever is abhorrent unto God. Thus doth the All-Knowing admonish you. We, verily, love cleanliness in all circumstances. Beware lest ye transgress the bounds of that whereunto ye have been bidden in the Book of God, the Almighty, the All-Praised.

Áthár-i-Qalam-i-A‘lá, vol. 1 (2006 ed.), p. 404 (selection no. 151).

https://adibmasumian.com/translations/bh05195/