The Source of Traditions on Imam al-Riḍā (Vol 2) · Hadith 40 (#Ḥadīth #40)

40 - وَبِهذَا الإِسنادِ قالَ: قالَ رَسُولُ اللَّهِ صَلَّى اللهُعَلَيْهِ وَآلِهِ: كَأَنِّي قَدْ دُعِيتُ فَأُجِبتُ، وَإِنِّي تارِكُ فِيكُمُ الثَّقَلَيْنِ أَحَدَهُما أَكْبَرُ مِنَ الآخَرِ - كِتابَ اللَّهِ - حَبْلٌ مَمدودٌ مِنَ السَّماءِ إِلَى الأَرْضِ - وَعِتْرَتِي - أَهْلَ بَيْتِي - فَانظُروا كَيْفَ تَخلُفُونِي فيهِمَا.

31-40 According to the same documentation, God’s Prophet (S) said, “It seems that I have been called in and I have accepted the call. I will depart you, but will leave two weighty things with you one of which is greater than the other one. It is God’s Book that is a rope extended out from the heavens onto the Earth. The other one is my ‘Itrat; that is members of my Household. Therefore watch and see how you treat these two after me.”

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).