عَنْ يَزِيدَ بْنِ أَبِي حَبِيبٍ رَضِيَ اللَّهُ عَنْهُ أَنَّ عَبْدَ الرَّحْمَنِ بْنَ شُمَاسَةَ رَضِيَ اللَّهُ عَنْهُ أَخْبَرَهُ أَنَّ زَيْدَ بْنَ ثَابِتٍ رَضِيَ اللَّهُ عَنْهُ قَالَ بَيْنَمَا نَحْنُ عِنْدَ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ نُؤَلِّفُ الْقُرْآنَ مِنَ الرِّقَاعِ إِذْ قَالَ طُوبَى لِلشَّامِ قِيلَ وَلِمَ ذَلِكَ يَا رَسُولَ اللَّهِ قَالَ إِنَّ مَلَائِكَةَ الرَّحْمَةِ بَاسِطَةٌ أَجْنِحَتَهَا عَلَيْهِ
It is narrated from Sayyiduna Zaid bin Thabit (may Allah be pleased with him), he says: We were sitting with the Noble Prophet (peace and blessings be upon him) compiling the Holy Qur'an on pieces of cloth, when suddenly the Prophet (peace and blessings be upon him) said: Glad tidings for the region of Sham. Someone asked: O Messenger of Allah! Why? The Prophet (peace and blessings be upon him) said: The angels of mercy have spread their wings over it.