That his father (Hazn bin Wahb) went to the Prophet (ﷺ) and the Prophet (ﷺ) asked (him), "What is your name?" He replied, "My name is Hazn." The Prophet (ﷺ) said, "You are Sahl." Hazn said, "I will not change the name with which my father has named me." Ibn Al-Musaiyab added: We have had roughness (in character) ever since. Narrated Al-Musaiyab:

on the authority of his father similarly as above (i.e., 209).
Sahih al-Bukhari Book 78, Hadith 214
← Previous Hadith A man among us begot a boy whom he named Al-Qasim. The people said (to him), "We will not call you Abul-l-Qasim, nor will we please you by calling you so." The man came to the Prophet (ﷺ) and mentioned that to him. The Prophet (ﷺ) said to him, "Name your son `Abdur-Rahman."

Sahih al-Bukhari Book 78, Hadith 213 Next Hadith → When Al-Mundhir bin Abu Usaid was born, he was brought to the Prophet (ﷺ) who placed him on his thigh. While Abu Usaid was sitting there, the Prophet (ﷺ) was busy with something in his hands so Abu Usaid told someone to take his son from the thigh of the Prophet (ﷺ) . When the Prophet (ﷺ) finished his job (with which he was busy), he said, "Where is the boy?" Abu Usaid replied, "We have sent him home." The Prophet (ﷺ) said, "What is his name?" Abu Usaid said, "(His name is) so-and-so. " The Prophet (ﷺ) said, "No, his name is Al-Mundhir." So he called him Al-Mundhir from that day.

Sahih al-Bukhari Book 78, Hadith 215