The Holy Quran guides people to the Imam 
2 Aḥadīth
Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad ibn ’Isa from al-Hasan ibn Mahbub who has said, “I asked abu al-Hassan al-Rida about the saying of Allah, the Most Majestic and Most Exalted: “We have chosen heirs for every legacy that parents and relatives may leave. Let those who have been promised a bequest receive their share of the legacy. . .”” (4:33) He said: It is a reference to the Imams (peace be upon them). Through them, Allah, the Most Majestic and Most Exalted, has established your covenants.”
مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدِ بْنِ عِيسَى عَنِ الْحَسَنِ بْنِ مَحْبُوبٍ قَالَ سَأَلْتُ أَبَا الْحَسَنِ الرِّضَا عَنْ قَوْلِهِ عَزَّ وَجَلَّ وَلِكُلٍّ جَعَلْنا مَوالِيَ مِمَّا تَرَكَ الْوالِدانِ وَالاقْرَبُونَ وَالَّذِينَ عَقَدَتْ أَيْمانُكُمْ قَالَ إِنَّمَا عَنَى بِذَلِكَ الائِمَّةَ (عليهم السلام) بِهِمْ عَقَدَ الله عَزَّ وَجَلَّ أَيْمَانَكُمْ.
Ali ibn Ibrahim has narrated from his father from Ibn Abi ‘Umayr from Ibrahim ibn ‘Abd al-Hamid from Musa ibn Akayl al-Numayri from al-‘Ala’ ibn Sayaba, from abu ‘Abdallah regarding the words of The Almigthy: “This Quran shows the way to that which is the most upright . .” (7:9) He said, “It guides to the Imam.”
عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ إِبْرَاهِيمَ بْنِ عَبْدِ الْحَمِيدِ عَنْ مُوسَى بْنِ أُكَيْلٍ النُّمَيْرِيِّ عَنِ الْعَلاءِ بْنِ سَيَابَةَ عَنْ أَبِي عَبْدِ الله فِي قَوْلِهِ تَعَالَى إِنَّ هذَا الْقُرْآنَ يَهْدِي لِلَّتِي هِيَ أَقْوَمُ قَالَ يَهْدِي إِلَى الامَامِ.