Nahj al-Balāgha

Hadith 1034
day-of-judgementpromise-threat
ومن كلام له (عليه السلام) كان كثيراً ما ينادي به أصحابه
What Amīr al-mu’minīn said generally to his companions warning them about the dangers of the Day of Judgement
Source: al-Sharīf al-Raḍī