Al-Nu’man ibn Bashir reported: The Messenger of Allah, peace, and blessings be upon him, said, “Verily, the most lightly punished of the people of Hellfire on the Day of Resurrection is a man under whose feet are placed two hot coals by which his brain boils.”
Source: Ṣaḥīḥ al-Bukhārī 6193, Ṣaḥīḥ Muslim 213
The Prophet (ﷺ) said, “Some people will be scorched by Hell (Fire) as a punishment for sins they have committed, and then Allah will admit them into Paradise by the grant of His Mercy. These people will be called, ‘Al-Jahannamiyyin’ (the people of Hell).
Source: Sahih al-Bukhari 7450
I heard the Prophet (ﷺ) saying, “The person who will have the least punishment from amongst the Hell Fire people on the Day of Resurrection, will be a man under whose arch of the feet a smoldering ember will be placed so that his brain will boil because of it.”
Source: Sahih al-Bukhari 6561
Narrated Thabit bin Ad-Dahhak:
The Prophet (ﷺ) said, “Whoever swears by a religion other than Islam, is, as he says; and whoever commits suicide with something, will be punished with the same thing in the (Hell) Fire; and cursing a believer is like murdering him; and whoever accuses a believer of disbelief, then it is as if he had killed him.”
source: Sahih al-Bukhari 6652
The Prophet (ﷺ) said, “Allah will say to that person of the (Hell) Fire who will receive the least punishment, ‘If you had everything on the earth, would you give it as a ransom to free yourself (i.e. save yourself from this Fire)?’ He will say, ‘Yes.’ Then Allah will say, ‘While you were in the backbone of Adam, I asked you much less than this, i.e. not to worship others besides Me, but you insisted on worshipping others besides me.’ “
source: Sahih al-Bukhari 3334
Note: May Allah Save us from the punishment of hellfire.