Al-Imam Ali (p.b.u.h), said:

Hadith n. 87
87. Amir al-mu’minin, peace be upon him, said: I wonder about the man who loses hope despite the possibility of seeking forgiveness.

Hadith n. 88
88. (Imam) Abu Ja`far Muhammad ibn `Ali al-Baqir, peace be upon both of them, has related from Amir al-mu’minin, peace be upon him, that he said:

There are two sources of deliverance from the Allah’s punishment, one of which has been raised up, while the other is before you. You should therefore adhere to it. The source of deliverance which has been raised up is the Messenger of Allah (may He bless him and his descendants), while the source of deliverance that remains is the seeking of forgiveness. Allah, the Glorified, has said: And Allah is not to chastise them while you are among them, nor is Allah to chastise them while yet they seek forgiveness. (Qur’an, 8:33)

As-Sayyid ar-Radi says: This is one of the most beautiful ways of deducing the meaning and the most delicate manner of interpretation.

Source: https://www.al-islam.org/nahjul-balagha-part-2-letters-and-sayings