Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
tabarani:2953 – Muḥammad b. ʿAbdullāh al-Ḥaḍramī > Abū Kurayb > Abū Usāmah > Ibn ʿAwn > ʿUmayr b. Isḥāq

[Machine] Hamza ibn Abdul-Muttalib used to fight alongside the Messenger of Allah ﷺ with two swords, saying "I am the lion of Allah and the lion of His Messenger."  

الطبراني:٢٩٥٣ – حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ اللهِ الْحَضْرَمِيُّ ثنا أَبُو كُرَيْبٍ ثنا أَبُو أُسَامَةَ عَنِ ابْنِ عَوْنٍ عَنْ عُمَيْرِ بْنِ إِسْحَاقَ قَالَ

كَانَ حَمْزَةُ بْنُ عَبْدِ الْمُطَّلِبِ يُقَاتِلُ بَيْنَ يَدَيْ رَسُولِ اللهِ ﷺ بِسَيفَيْنِ وَيَقُولُ «أَنَا أَسَدُ اللهِ وَأَسَدُ رَسُولِهِ»  

See similar narrations below:

Collected by Ḥākim
hakim:4880 – Abū Bakr Muḥammad b. Aḥmad b. Bālawayh > Muḥammad b. Shādhān al-Jawharī > Muʿāwiyah b. ʿAmr > Abū Isḥāq al-Fazārī > Ibn ʿAwn > ʿUmayr b. Isḥāq > Saʿd b. Abū Waqqāṣ

[Machine] Hamzah ibn Abdul-Muttalib was fighting on the day of Uhud, in front of the Messenger of Allah ﷺ, and he would say, "I am the Lion of Allah, as agreed upon by the two Shaykhs, and they did not invalidate it." (authentic)  

الحاكم:٤٨٨٠ – حَدَّثَنِي أَبُو بَكْرٍ مُحَمَّدُ بْنُ أَحْمَدَ بْنِ بَالَوَيْهِ ثنا مُحَمَّدُ بْنُ شَاذَانَ الْجَوْهَرِيُّ حَدَّثَنَا مُعَاوِيَةُ بْنُ عَمْرٍو عَنِ أَبُوْ إِسْحَاقَ الْفَزَارِيِّ عَنِ ابْنِ عَوْنٍ عَنْ عُمَيْرِ بْنِ إِسْحَاقَ عَنْ سَعْدِ بْنِ أَبِي وَقَّاصٍ قَالَ

كَانَ حَمْزَةُ بْنُ عَبْدِ الْمُطَّلِبِ يُقَاتِلُ يَوْمَ أُحُدٍ بَيْنَ يَدَيْ رَسُولِ اللَّهِ ﷺ وَيَقُولُ أَنَا أَسَدُ اللَّهِ «صَحِيحٌ عَلَى شَرْطِ الشَّيْخَيْنِ وَلَمْ يُخَرِّجَاهُ» صحيح  

hakim:4875 – Abū al-ʿAbbās Muḥammad b. Yaʿqūb > Abū Jaʿfar Muḥammad b. ʿUbaydullāh b. Abū Dāwud al-Munādī > Isḥāq b. Yūsuf al-Azraq > Ibn ʿAwn > ʿUmayr b. Isḥāq

[Machine] Hamza was fighting alongside the Messenger of Allah ﷺ with two swords and saying, "I am the lion of Allah."  

الحاكم:٤٨٧٥ – وَحَدَّثَنَا أَبُو الْعَبَّاسِ مُحَمَّدُ بْنُ يَعْقُوبَ ثنا أَبُو جَعْفَرٍ مُحَمَّدُ بْنُ عُبَيْدِ اللَّهِ بْنُ أَبِي دَاوُدَ الْمُنَادِي ثنا إِسْحَاقُ بْنُ يُوسُفَ الْأَزْرَقُ عَنِ ابْنِ عَوْنٍ عَنْ عُمَيْرِ بْنِ إِسْحَاقَ قَالَ

كَانَ حَمْزَةُ يُقَاتِلُ بَيْنَ يَدَيْ رَسُولِ اللَّهِ ﷺ بِسَيْفَيْنِ وَيَقُولُ أَنَا أَسَدُ اللَّهِ