Shaqiq, or someone else, narrates (this doubt is from the narrator Qays): A man came to Sayyiduna Salman al-Farisi (may Allah be pleased with him), and he called for whatever he had in his house for him and said: "Had the Prophet (peace and blessings be upon him) not forbidden us" (the narrator is in doubt, or perhaps the words are: "Had we not been forbidden") "that any of us should go to trouble for his companion, I would have gone to trouble for you."
Imam Ahmad recorded it, and Imam al-Tabarani recorded it in al-Mu'jam al-Kabir and al-Mu'jam al-Awsat with various chains; the narrators of one of the chains of al-Mu'jam al-Kabir are the narrators of the Sahih.
Imam al-Bazzar recorded a similar report from Abu Wa'il, and he did not express doubt in it.