Al-Kāfi - Volume 4 > Another Chapter Related to Previous Matters
Hadith #2

2ـ أَبُو عَلِيٍّ الأَشْعَرِيُّ عَنْ عَبْدِ الله بْنِ مُوسَى عَنِ الْحَسَنِ بْنِ عَلِيٍّ الْوَشَّاءِ قَالَ سَمِعْتُ الرِّضَا (عَلَيْهِ السَّلاَم) يَقُولُ إِنَّ لِكُلِّ إِمَامٍ عَهْداً فِي عُنُقِ أَوْلِيَائِهِ وَشِيعَتِهِ وَإِنَّ مِنْ تَمَامِ الْوَفَاءِ بِالْعَهْدِ وَحُسْنِ الأَدَاءِ زِيَارَةَ قُبُورِهِمْ فَمَنْ زَارَهُمْ رَغْبَةً فِي زِيَارَتِهِمْ وَتَصْدِيقاً بِمَا رَغِبُوا فِيهِ كَانَ أَئِمَّتُهُمْ شُفَعَاءَهُمْ يَوْمَ الْقِيَامَةِ.

2. Abu Ali al-Ash’ariy has narrated from ‘Abd Allah ibn Musa from al-Hassan ibn Ali al-Washsha’ who has said the following: “I once heard al-Rida’, ‘Alayhi al-Salam, say, ’The covenant makes all and every friend and followers of every Imam accountable. In order to stand up truly by this covenant, one should visit the gravesites of ’A’immah, ‘Alayhim al-Salam. Those who visit them because of their interest in such visits and to affirm what they are interested in, their Imam will intercede on their behalf on the Day of Judgment.”’