Al-Kāfi

Hadith 1333
covenantday-of-judgement
2ـ عَلِيٌّ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ شُعَيْبٍ الْعَقَرْقُوفِيِّ عَنْ أَبِي عَبْدِ الله (عَلَيهِ السَّلام) قَالَ قَالَ رَسُولُ الله (صَلَّى اللهُ عَلَيْهِ وآلِه) مَنْ كَانَ يُؤْمِنُ بِالله وَالْيَوْمِ الآخِرِ فَلْيَفِ إِذَا وَعَدَ.
2. Ali has narrated from his father from Ibn Abi ‘Umayr from Shu’ayb al-‘Aqarqufi from Abu ‘Abdillah (a.s.) who has said the following: “The Messenger of Allah has said, ‘Whoever believes in Allah, and in the Day of Judgment, must fulfill his promise.’”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī