فِيمَا احْتَجَّ الرِّضَاؑ عَلٰى عُلَمَاءِ الْعَامَّةِ فِي فَضْلِ الْعِتْرَةِ الطَّاهِرَةِ اَنَّهُ سَاَلَ الْعُلَمَاءَ فَقَالَ اَخْبِرُونِي عَنْ قَوْلِ اللّهِ عَزَّ وَ جَلَّ يس وَ الْقُرْآنِ الْحَكِيمِ اِنَّكَ لَمِنَ الْمُرْسَلِينَ عَلى صِراطٍ مُسْتَقِيمٍ فَمَنْ عَنَى بِقَوْلِهِ يس قَالَتِ الْعُلَمَاءُ يس مُحَمَّدٌ ﷺ لَمْ يَشُكَّ فِيهِ اَحَدٌ قَالَ اَبُو الْحَسَنِؑ فَاِنَّ اللهَ عَزَّ وَ جَلَّ اَعْطَى مُحَمَّداً وَ آلَ مُحَمَّدٍ مِنْ ذَلِكَ فَضْلًا لَا يَبْلُغُ اَحَدٌ كُنْهَ وَصْفِهِ اِلَّا مَنْ عَقَلَهُ وَ ذَلِكَ اَنَّ اللهَ عَزَّ وَ جَلَّ لَمْ يُسَلِّمْ عَلٰى اَحَدٍ اِلَّا عَلَى الْاَنْبِيَاءِ ﷺ فَقَالَ تَبَارَكَ وَ تَعَالَى سَلامٌ عَلى نُوحٍ فِي الْعالَمِينَ وَ قَالَ سَلامٌ عَلى اِبْراهِيمَ وَ قَالَ سَلامٌ عَلى مُوسى وَ هارُونَ وَ لَمْ يَقُلْ سَلَامٌ عَلٰى آلِ نُوحٍ وَ لَمْ يَقُلْ سَلَامٌ عَلٰى آلِ اِبْرَاهِيمَ وَ لَا قَالَ سَلَامٌ عَلٰى آلِ مُوسَى وَ هَارُونَ وَ قَالَ عَزَّ وَ جَلَّ سَلَامٌ عَلٰى آلِ يس يَعْنِي آلَ مُحَمَّدٍ عَلَيْهِمُ السَّلَام
Among the arguments of Imam Reza (peace be upon him) against the opposing scholars vis-à-vis the excellence of the pure progeny (peace be upon him) was that he (peace be upon him) asked the scholars, “All of you inform me about the word of Allah – Mighty and Majestic be He – Ya Seen and the Wise Quran. Surely, you are from the Messengers upon the right path.’ Whom did He imply by His word Ya Seen?” The scholars replied, “Ya Seen is Muhammad (peace be upon him and his holy progeny). No doubt about it.” Imam Reza (peace be upon him) retorted,
“Surely Allah – Mighty and Majestic be He – gave Muhammad and the progeny of Muhammad from this excellence, none can reach to the essence of his attribute except the one who uses his intellect. For, Allah – Mighty and Majestic be He – has not send salutations except on the Prophets (peace be upon them). So He – blessed and High be He – said, ‘Salutations be on Noah in the worlds’ and He said, ‘Salutations be on Ibraheem’ and He said, ‘Salutations be on Moosa and Haroon’ but He did not say ‘Salutations be on the progeny of Noah’. He did not say ‘Salutations be on the progeny of Ibraheem’. He did not say, ‘Salutations be on the progeny of Moosa and Haroon’. But He – Mighty and Majestic be He – said, ‘Salutations be on the progeny of Ya Seen.’ That is, the progeny of Muhammad (peace be upon him and his holy progeny).”
Note:
From the above tradition, the least we can derive is that the Ahle Bait (peace be upon them) are of the level as that of the Divine Prophets (peace be upon them) – if not more – and since the latter are infallible, the former too have to be the same.
References:
1. Behaar al-Anwaar, vol. 23, p. 167, H. 1
2. Oyoon-o-Akhbaar al-Reza (peace be upon him)