عَنْ عَبْدِ اللَّهِ بْنِ بِشْرٍ النَّخْعِيِّ عَنْ أَبِيهِ بِشْرِ بْنِ سُحَيْمٍ رَضِيَ اللَّهُ عَنْهُ أَنَّهُ سَمِعَ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ: ”لَتُفْتَحَنَّ الْقُسْطُنْطِينِيَّةُ فَلَنِعْمَ الْأَمِيرُ أَمِيرُهَا وَلَنِعْمَ الْجَيْشُ ذَلِكَ الْجَيْشُ“ قَالَ: فَدَعَانِي مَسْلَمَةُ بْنُ عَبْدِ الْمَلِكِ فَسَأَلَنِي فَحَدَّثْتُهُ فَغَزَا الْقُسْطُنْطِينِيَّةَ
It is narrated from Sayyiduna Bishr bin Suhaim (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: "Constantinople will certainly be conquered; its commander will be the best commander and that army will be the best army." Abdullah says: Maslamah bin Abdul Malik called me and asked me about this, so I narrated this hadith to him, and because of this, he launched an expedition against Constantinople.