عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ رَضِيَ اللَّهُ عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ: ((إِنِّي تَارِكٌ فِيكُمُ الثَّقَلَيْنِ، أَحَدُهُمَا أَكْبَرُ مِنَ الْآخَرِ، كِتَابُ اللَّهِ حَبْلٌ مَمْدُودٌ مِنَ السَّمَاءِ إِلَى الْأَرْضِ، وَعِتْرَتِي أَهْلُ بَيْتِي وَإِنَّهُمَا لَنْ يَفْتَرِقَا حَتَّى يَرِدَا عَلَيَّ الْحَوْضَ))
It is narrated from Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "I am leaving among you two precious things; one of them is greater than the other. The Book of Allah is a rope extended from the sky to the earth, and my progeny, my Ahl al-Bayt. These two will not separate until they both come to me at the Pond."