The Source of Traditions on Imam al-Riḍā (Vol 2) · Hadith 31 (#Ḥadīth #31)

31 - وَبِهذَا الإِسنادِ قالَ: قالَ رَسُولُ اللَّهِ صَلَّى اللهُعَلَيْهِ وَآلِهِ: ما مِن مائِدَةٍ وُضِعَت وَحَضَرَ عَلَيْها مَن اسمُهُ أَحْمَدُ أَوْ مُحَمَّدٌ إِلّا قُدَّسَّ ذلِكَ المَنزِلُ فِي كُلِّ يَوْمٍ مَرَّتَينِ.

31-31 According to the same documentation, God’s Prophet (S) said, “Whenever there is a tablecloth spread and there is someone named Muhammad or Ahmad sitting around it, the house will be purified twice each day.”

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