It is narrated from Sayyiduna Salamah bin al-Akwa' (may Allah be pleased with him) that he said: "I pledged allegiance to the Messenger of Allah (peace and blessings be upon him) with this very hand of mine; then we kissed it (the hand), and no objection was made to that."
This hadith is narrated from Sayyiduna Salamah (may Allah be pleased with him) only with this chain; Attaf bin Khalid (may Allah have mercy on him) is alone in narrating it.
Hadith Referenceالمعجم الأوسط / باب الألف / 657
Hadith Gradingمحدثین:رجاله ثقات
Hadith Takhrij«قال الهيثمي: ورجاله ثقات «مجمع الزوائد ومنبع الفوائد، ج 8، ص 42»» «أخرجه أحمد فى «مسنده» برقم: 16817»