Al-Kāfi - The Book of Haj

Chapter: Another Chapter Related to Previous Matters 2ـ أَبُو عَلِيٍّ الأَشْعَرِيُّ عَنْ عَبْدِ الله بْنِ ٠ُوسَى عَنِ الْحَسَنِ بْنِ عَلِيٍّ الْوَشَّاءِ قَالَ سَ٠ِعْتُ الرِّضَا (عَلَيْهِ السَّلاَ٠) يَقُولُ إِنَّ لِكُلِّ إِ٠ٍ عَهْداً فِي عُنُقِ أَوْلِيَائِهِ وَشِيعَتِهِ وَإِنَّ ٠ِ الْوَفَاءِ بِالْعَهْدِ وَحُسْنِ الأَدَاءِ زِيَارَةَ قُبُورِهِ٠ْ رَغْبَةً فِي زِيَارَتِهِ٠ْ وَتَصْدِيقاً بِ٠َا رَغِبُوا فِيهِ كَانَ أَئِ٠2.

Abu Ali al-Ash'ari narrated from Abdullah ibn Musa, from al-Hasan ibn Ali al-Washsha', who said that he heard Imam al-Ridha (as) say: "Indeed, every Imam has a covenant upon his supporters and followers. And among the complete fulfillment of the covenant and good performance is the visitation of their graves.

So whoever visits them out of desire for visiting them and in affirmation of what they desired will have their Imams as their intercessors on the Day of Resurrection." جهول - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (18/285))