Hadith 66-21

حَدَّثَنا تَميم بن عَبدُ اللَّه بن تَميمِ القَرشي‏ رَضِىَ اللهُ عَنْهُ قالَ: حَدَّثَنا أبي قالَ حَدَّثَنا أَحمَد بن عَلِيٍّ الأَنصاري عَن أَبي الصَّلت الهَروي قالَ: كُنتُ عِندَ الرِّضا عَلَيْهِ السَّلامُ فَدَخَلَ عَلَيهِ قَومٌ مِن أَهل قُم فَسَلِّمُوا عَلَيه. فَرَدَّ عَليهم وقُربِهِم ثُمَّ قالَ لَهُـم الرِّضـا عَلَيْـهِ السَّلامُ مَرحَباً بِكُم و أَهلاً فَأنتم شيِعَتنا حَقّاً و سَيَأتي علَيكُم يَوم تَزوروني فيهِ تُربَتي بِطُوس أَلا فَمَن زارَني و هُوَ على غَسَلَ خَرَجَ مِن ذُنُوبِهِ كَيَومَ وَلدَتهُ أُمُّه.

Tamim ibn Abdullah ibn Tamim al-Qurashi - may God be pleased with him - narrated that his father quoted on the authority of Ahmad ibn Ali Al-Ansari, on the authority of Abi Salt al-Harawi, “I was with Ar-Ridha’ (a.s.) when a group of people from Qum entered and greeted him. The Imam greeted them back and paid his respects to them. Then Ar-Ridha’ (a.s.) told them, ‘You are welcome. You are truly our followers. There will come a time when you will visit my shrine in Toos. Indeed, whoever visits me having already performed the ritual bathing (‘Ghusl) will be purified from all his sins just as the day he was born from his mother.’”