[Machine] Ismail (son of Ibrahim) was a prophet of Allah, who was named "Sadiq al-Waad" (the truthful in promise). He was a man of strength who fought against the enemies of Allah, and Allah granted him victory over them. He was fierce in his war against the disbelievers, and he did not fear any blame from anyone when it came to fulfilling the commands of Allah. He had a small head, a thick neck, long arms and legs. He would strike his knees with his hands while standing, and he had small eyes, a long nose, broad shoulders, long fingers, and a prominent physique. He was strong, fierce, and harsh towards the disbelievers. He used to command his family to pray and give Zakaat, and he was pleasing to his Lord. It is said, "His Zakaat was his sacrifice to Allah from his wealth, and he would not promise anyone anything except that he would fulfill it, so Allah named him Sadiq al-Waad (the truthful in promise). He was a messenger and a prophet." The isnad (chain of narration) is weak.  

«كَانَ إِسْمَاعِيلُ بْنُ إِبْرَاهِيمَ نَبِيَّ اللَّهِ الَّذِي سَمَّاهُ صَادِقَ الْوَعْدِ وَكَانَ رَجُلًا فِيهِ حِدَّةٌ يُجَاهِدُ أَعْدَاءَ اللَّهِ وَيُعْطِيهِ اللَّهُ النَّصْرَ عَلَيْهِمْ وَالظَّفَرَ وَكَانَ شَدِيدَ الْحَرْبِ عَلَى الْكُفَّارِ لَا يَخَافُ فِي اللَّهِ لَوْمَةَ لَائِمٍ صَغِيرَ الرَّأْسِ غَلِيظَ الْعُنُقِ طَوِيلَ الْيَدَيْنِ وَالرِّجْلَيْنِ يَضْرِبُ بِيَدَيْهِ رُكْبَتَيْهِ وَهُوَ قَائِمٌ صَغِيرَ الْعَيْنَيْنِ طَوِيلَ الْأَنْفِ عَرِيضَ الْكَتِفِ طَوِيلَ الْأَصَابِعِ بَارِزَ الْخَلْقِ قَوِيٌّ شَدِيدٌ عَنِيفٌ عَلَى الْكُفَّارِ وَكَانَ يَأْمُرُ أَهْلَهُ بِالصَّلَاةِ وَالزَّكَاةِ وَكَانَ عِنْدَ رَبِّهِ مَرْضِيًّا» قَالَ «وَكَانَتْ زَكَاتُهُ الْقُرْبَانُ إِلَى اللَّهِ مِنْ أَمْوَالِهِمْ وَكَانَ لَا يَعِدُ أَحَدًا شَيْئًا إِلَّا أَنْجَزَهُ فَسَمَّاهُ اللَّهُ صَادِقَ الْوَعْدِ وَكَانَ رَسُولًا نَبِيًّا» إسناده ضعيف