Sabbath 4.6

4.6

Tassa tathāgataṃ anussarato cittaṃ pasīdati, pāmojjaṃ uppajjati, ye cittassa upakkilesā te pahīyanti, seyyathāpi, visākhe, upakkiliṭṭhassa sīsassa upakkamena pariyodapanā hoti.

As they recollect the Realized One, their mind becomes clear, joy arises, and mental corruptions are given up. It’s just like cleaning a dirty head by exertion.