Al-Mu'jam al-Awsat 3691 — some people from the Arabs came

Sayyiduna Nafi' bin Utbah (may Allah be pleased with him) narrates that some people from the Arabs came to the Messenger of Allah (peace and blessings be upon him) to accept Islam, wearing woollen garments. I said (to myself): "I will surely stand between these people and the Messenger of Allah (peace and blessings be upon him)." Then I said to myself: "He (peace and blessings be upon him) is now speaking privately with these people." But my heart would not accept anything but that I go to him (peace and blessings be upon him), so I went, and I heard him (peace and blessings be upon him) say: "You will fight in the Arabian Peninsula and Allah will grant it to you in conquest; then you will fight Persia and Allah will grant that to you in conquest as well; then you will fight the Dajjal and Allah will grant victory over him as well."
Imam al-Tabarani (may Allah have mercy on him) said: "This hadith was narrated from Musa bin Abd al-Malik bin Umayr only by Asim bin Ali."