The Book on Jihad
23/11. Chapter:
What Has Been Related About Code Words
Jami at-Tirmidhi
حَدَّثَنَا مَحْمُودُ بْنُ غَيْلاَنَ، حَدَّثَنَا وَكِيعٌ، حَدَّثَنَا سُفْيَانُ، عَنْ أَبِي إِسْحَاقَ، عَنِ الْمُهَلَّبِ بْنِ أَبِي صُفْرَةَ، عَمَّنْ سَمِعَ النَّبِيَّ صلى الله عليه وسلم يَقُولُ " إِنْ بَيَّتَكُمُ الْعَدُوُّ فَقُولُوا: حم لاَ يُنْصَرُونَ " . قَالَ أَبُو عِيسَى وَفِي الْبَابِ عَنْ سَلَمَةَ بْنِ الأَكْوَعِ . وَهَكَذَا رَوَى بَعْضُهُمْ عَنْ أَبِي إِسْحَاقَ مِثْلَ رِوَايَةِ الثَّوْرِيِّ وَرُوِيَ عَنْهُ عَنِ الْمُهَلَّبِ بْنِ أَبِي صُفْرَةَ عَنِ النَّبِيِّ صلى الله عليه وسلم مُرْسَلاً .
Narrated Al-Muhallab bin Abi Sufrah: From One Who Heard The Prophet (ﷺ) Saying: "If You Suffer A Surprise Attack From The Enemy Then Say: 'Ha Min, They Will Not Be Victorious.'" [Abu 'Eisa Said:] There Is Something On This Topic From Salamah Bin Al-Akwa'. This Is How Some Of Them Reported It From Abu Ishaq, The Same As The Narration Of Ath-Thawri. And It Has Been Reported From Him, From Al-Muhallab Bin Abi Sufrah From The Prophet (ﷺ) In Mursal Form.
Reference : Jami` at-Tirmidhi 1682In-book reference : Book 23, Hadith 13English translation : Vol. 3, Book 21, Hadith 1682