صحيح البخاري
Sahih Bukhari
كتاب العلم
The Book of Knowledge
بَابُ مَا يُذْكَرُ فِي الْمُنَاوَلَةِ وَكِتَابِ أَهْلِ الْعِلْمِ بِالْعِلْمِ إِلَى الْبُلْدَانِ:
(7) Chapter. What is said regarding the hand to hand exchange (of books of knowledge), and the writing of knowledge by religious scholars to different countries.
Hadith 65
حَدَّثَنَا مُحَمَّدُ بْنُ مُقَاتِلٍ أَبُو الْحَسَنِ الْمَرْوَزِيُّ ، أَخْبَرَنَا عَبْدُ اللَّهِ ، قَالَ : أَخْبَرَنَا شُعْبَةُ ، عَنْ قَتَادَةَ ، عَنْ أَنَسِ بْنِ مَالِكٍ ، قَالَ : " كَتَبَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ كِتَابًا أَوْ أَرَادَ أَنْ يَكْتُبَ ، فَقِيلَ لَهُ : إِنَّهُمْ لَا يَقْرَءُونَ كِتَابًا إِلَّا مَخْتُومًا ، فَاتَّخَذَ خَاتَمًا مِنْ فِضَّةٍ نَقْشُهُ مُحَمَّدٌ رَسُولُ اللَّهِ كَأَنِّي أَنْظُرُ إِلَى بَيَاضِهِ فِي يَدِهِ ، فَقُلْتُ لِقَتَادَةَ : مَنْ قَالَ نَقْشُهُ مُحَمَّدٌ رَسُولُ اللَّهِ ؟ قَالَ : أَنَسٌ " .
Narrated Anas bin Malik: Once the Prophet wrote a letter or had an idea of writing a letter. The Prophet was told that they (rulers) would not read letters unless they were sealed. So the Prophet got a silver ring made with "Muhammad Allah's Apostle" engraved on it. As if I were just observing its white glitter in the hand of the Prophet.
