What is the interpretation of the Hadith: "Whoever performs ablution well and walks to the mosque, and does not touch the pebbles, will be forgiven," and what is meant by "does not touch the pebbles"?

The Prophet's saying: "He who performs ablution well, then comes to the Friday prayer, listens and remains silent, will have his sins forgiven between that Friday and the next, with an addition of three days. And he who touches pebbles has engaged in idleness (lagha)." Narrated by Muslim.

Its meaning is that whoever performs ablution perfectly and completely, then walks to the جامع مسجد (central mosque) for the Friday prayer, and upon entering the mosque does not distract himself from listening to the sermon with talk or touching pebbles, etc., Allah will forgive his sins between that Friday and the previous Friday, with an addition of three days, so that the good deed is rewarded tenfold.

As for his saying: "And he who touches pebbles has engaged in idleness (lagha)," it means a prohibition against touching pebbles or any fidgeting during the sermon. The intended meaning of "lagha" (idleness) here is: reprehensible, rejected falsehood.