It is narrated from Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) was praying when a Bedouin passed by with his milch camel. The Prophet (peace and blessings be upon him) gestured to him (to stop), but he did not understand. Then Sayyiduna Umar (may Allah be pleased with him) called out to him: "O Bedouin, get back!" When the Prophet (peace and blessings be upon him) ended the prayer with the salam, he asked: "Who was the one who spoke?" The Companions said: "Sayyiduna Umar (may Allah be pleased with him)." He (peace and blessings be upon him) said: "This (speaker) has no understanding (of this issue)."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated these hadiths from Isa (may Allah have mercy on him) except Safwan (may Allah have mercy on him)."
Hadith Referenceالمعجم الأوسط / باب الألف / 1561
Hadith Gradingمحدثین:فيه عيسى بن المسيب البجلي مختلف فيه
Hadith Takhrij«قال الهيثمي: فيه عيسى بن المسيب البجلي وقد وثقه ابن حبان والحاكم في المستدرك وضعفه جماعة «مجمع الزوائد ومنبع الفوائد، ج 2، ص 61»»