Hum se Abd-ul-A'la bin Hammad ne bayan kiya, unhon ne kaha hum se Yazid bin Zuray ne bayan kiya, unhon ne kaha hum se Saeed bin Abi Aroobah ne bayan kiya, in se Qatadah ne aur in se Anas bin Malik razi Allahu anhu ne ke Nabi Karim salla Allahu alaihi wasallam ne Ajam ke kuch logon (Shahan e Ajam) ke paas khat likhna chaha to Aap se kaha gaya ke Ajam ke log koi khat is waqt tak nahi qabool karte jab tak is par mohar lagi hui na ho. Chunanche Nabi Karim salla Allahu alaihi wasallam ne chaandi ki ek angoothi banwayi. Jis par yeh kunda tha «Muhammadun Rasool-ullahi» . Goya is waqt Nabi Karim salla Allahu alaihi wasallam ki ungli ya Aap ki hatheli mein is ki chamak dekh raha hoon.