CC Madhya 12.97

prathame karila prabhu mandira prakṣālana
ūrdhva-adho bhitti, gṛha-madhya, siṁhāsana
Word for word: 
prathame — in the first instance; karila — did; prabhu — Śrī Caitanya Mahāprabhu; mandira prakṣālana — washing of the temple; ūrdhva — on the ceiling; adhaḥ — on the floor; bhitti — walls; gṛha-madhya — within the home; siṁhāsana — the sitting place of the Lord.
Translation: 
In this way, Śrī Caitanya Mahāprabhu first washed the main temple and then thoroughly washed the ceiling, the walls, the floor, the sitting place [siṁhāsana] and everything else within the room.