https://islamqa.info/en/answers/10903/signs-of-a-good-end-in-islam;

The Prophet (peace and blessings of Allah be upon him) said, “A person whose last words are La ilaha illallah [there is none worthy of being worshipped but Allah] will enter Paradise.” (Narrated by Abu Dawud, 3116; classed as authentic by Al-Albani in Sahih Abu Dawood, 2673)

• Dying with sweat on the forehead. 

Buraydah ibn Al-Husayb (may Allah be pleased with him) said: I heard the Messenger of Allah (peace and blessings of Allah be upon him) say, “The believer dies with sweat on his forehead.” Narrated by Ahmad, 22513; At-Tirmidhi, 980; An-Nasa’i, 1828. (Classed as authentic by Al-Albani in Sahih At-Tirmidhi) 

• Dying on the night or day of Friday.

The Messenger of Allah (peace and blessings of Allah be upon him) said: “There is no Muslim who dies on the day of Friday or the night of Friday, but Allah will protect him from the trial (fitnah) of the grave.” (Narrated by Ahmad, 6546; At-Tirmidhi, 1074. Al-Albani said: When all its Isnads (chains of narrators) are taken into consideration, this Hadith is sound or authentic) 

Chapter (2) sūrat l-Baqarah (The Cow) 2-268; Sahih International: Satan Threatens you with Poverty and orders you to Immorality, while Allah promises you forgiveness from Him and bounty. And Allah is all-Encompassing and Knowing.

Narrated Abu Sa`id Al-Khudri and Abu Huraira:

The Prophet (ﷺ) said, “No fatigue, nor disease, nor sorrow, nor sadness, nor hurt, nor distress befalls a Muslim, even if it were the prick he receives from a thorn, but that Allah expiates some of his sins for that.”
Reference : Sahih al-Bukhari 5641, 5642
In-book reference : Book 75, Hadith 2

What is the meaning of Allah’s Saying: “And those who invoke not any other ilâh (god) along with Allâh, nor kill such person as Allâh has forbidden, except for just cause, nor commit illegal sexual intercourse – and whoever does this shall receive the punishment. The torment will be doubled to him on the Day of Resurrection, and he will abide therein in disgrace;” [al-Furqan: 68-69] Do these Ayahs (Qur’anic verses) mean that a person who commits all of the three mentioned major sins will abide in Hellfire forever or that applies to whoever commits only one of them? And whoever repents and does good has truly turned to Allah properly.