قَالَ اَبُو عَبْدِ اللهِؑ لَوْ كَانَ النَّاسُ رَجُلَيْنِ لَكَانَ اَحَدُهُمَا الْاِمَامَ وَ قَالَ اِنَّ آخِرَ مَنْ يَمُوتُ الْاِمَامُ لِئَلَّا يَحْتَجَّ اَحَدٌ عَلَى اللهِ عَزَّ وَ جَلَّ اَنَّهُ تَرَكَهُ بِغَيْرِ حُجَّةٍ لِلهِ عَلَيْهِ
Imam Sadeq (peace be upon him) said,
“If the people were only two people, certainly one of them will be an Imam.” He (peace be upon him) continued, “Surely, the last person to die will be an Imam so that none can have any argument against Allah – Mighty and Majestic be He – that He has left him without a Proof of Allah upon him.”
Here the word Imam has been used in its vaster sense i.e. a Prophet, a Messenger, a successor or an Imam. In other words, in any form a divine proof should be present so that people don’t have any argument against Allah on the Day of Judgment i.e. punishment without explanation.
1. Kaafi, vol. 1, p. 180, H. 3