What is the explanation of the definition "the removal of ritual impurity, whether actual or constructive, and what falls under its meaning, and the removal of filth," and an elaboration on the meaning of "and what falls under its meaning"?

The explanation of the definition as stated by scholars is as follows: "(Elevation of Hadath)" means the removal of the characteristic that prevents prayer, circumambulation (Tawaf), and touching the Qur'an. Hadath is a characteristic that resides in the body and is divided into minor hadath, which necessitates ablution (Wudu'), and major hadath, which necessitates a ritual bath (Ghusl). Hadath is not an impurity (Najasa). Their statement: "(In reality)" is like the removal of minor hadath from one who had it after ablution. And their statement: "(Or by ruling)" applies to one who is in a constant state of hadath, for their hadath is elevated by ruling, not in reality. And their statement: "(And what is in its meaning)" refers to what is similar to the elevation of hadath, such as what is achieved by washing the deceased, as it is an act of worship and not due to hadath. Similarly, washing the hands of one who rises from sleep at night, and what is achieved by recommended ablution and ritual baths. And their statement: "(And removal of Khubth)" and Khubth is impurity.