عَنْ اَبِي عَبْدِ اللهِؑ اَنَّ جَبْرَئِيلَ نَزَلَ عَلٰى مُحَمَّدٍ ﷺ يُخْبِرُ عَنْ رَبِّهِ عَزَّ وَ جَلَّ فَقَالَ لَهُ يَا مُحَمَّدُ لَمْ اَتْرُكِ الْاَرْضَ اِلَّا وَ فِيهَا عَالِمٌ يَعْرِفُ طَاعَتِي وَ هُدَايَ وَ يَكُونُ نَجَاةً فِيمَا بَيْنَ قَبْضِ النَّبِيِّ اِلَى خُرُوجِ النَّبِيِّ الْآخَرِ وَ لَمْ اَكُنْ اَتْرُكُ اِبْلِيسَ يُضِلُّ النَّاسَ وَ لَيْسَ فِي الْاَرْضِ حُجَّةٌ وَ دَاعٍ اِلَيَّ وَ هَادٍ اِلَى سَبِيلِي وَ عَارِفٍ بِاَمْرِي وَ اِنِّي قَدْ قَضَيْتُ لِكُلِّ قَوْمٍ هَادِياً اَهْدِي بِهِ السُّعَدَاءَ وَ يَكُونُ حُجَّةً عَلَى الْاَشْقِيَاءِ
Imam Abu Abdillah (al-Sadeq a.s.) informs,
“Surely, Jibraeel descended on Muhammad (peace be upon him and his holy progeny) informing from his Lord – Mighty and Majestic be He. He said to him, ‘O Muhammad! I have not left the earth except that in it is a (divinely appointed) man of knowledge. He knows My obedience and My guidance. He is the salvation between the death of a Prophet and the appearance of another Prophet. I have not left Iblis for deviating the people while there is no divine proof in the earth, a caller towards My path and a knower of My command. Indeed, I have decreed a guide for every nation through whom I guide the fortunate ones and who is a proof against the wretched ones.”
Note:
Here, Allah says that He would not leave the people alone to fight against Iblis. It would be an unfair fight. There should always be a Divine proof who will call the people towards Allah, guide towards His path and aware of His path. He is the salvation. Through him Allah guides the fortunate ones and he is His proof against the wretched ones.
References:
1. Behaar al-Anwaar, vol. 23, p. 22, H. 22
2. Elal al-Sharaae’, vol. 1, p. 196, Chapter 153, H. 7