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
abudawud:4196 – Muḥammad b. al-ʿAlāʾ > Zayd b. al-Ḥubāb > Maymūn b. ʿAbdullāh > Thābit al-Bunānī > Anas b. Mālik > Kānat Lī Dhuʾābah

I had a hanging lock of hair. My mother said to me: I shall not cut it, for the Messenger of Allah ﷺ used to stretch it out and hold it.  

أبو داود:٤١٩٦ – حَدَّثَنَا مُحَمَّدُ بْنُ الْعَلاَءِ حَدَّثَنَا زَيْدُ بْنُ الْحُبَابِ عَنْ مَيْمُونِ بْنِ عَبْدِ اللَّهِ عَنْ ثَابِتٍ الْبُنَانِيِّ عَنْ أَنَسِ بْنِ مَالِكٍ قَالَ

كَانَتْ لِي ذُؤَابَةٌ فَقَالَتْ لِي أُمِّي لاَ أَجُزُّهَا كَانَ رَسُولُ اللَّهِ ﷺ يَمُدُّهَا وَيَأْخُذُ بِهَا  

See similar narrations below:

Collected by Ṭabarānī, Suyūṭī
tabarani:712 – Muḥammad b. ʿAbdullāh al-Ḥaḍramī > ʿAbdullāh b. Abū Ziyād > Zayd b. al-Ḥubāb > Maymūn Abū ʿAbdullāh > Thābit > Anas

I had a hanging lock of hair. My mother said to me: I shall not cut it, for the Messenger of Allah ﷺ used to stretch it out and hold it. (Using translation from Abū Dāʾūd 4196)   

الطبراني:٧١٢ – حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ اللهِ الْحَضْرَمِيُّ ثنا عَبْدُ اللهِ بْنُ أَبِي زِيَادٍ ثنا زَيْدُ بْنُ الْحُبَابِ ثنا مَيْمُونٌ أَبُو عَبْدِ اللهِ عَنْ ثَابِتٍ عَنْ أَنَسٍ قَالَ

«كَانَتْ لِي ذُؤَابَةٌ وَكَانَ رَسُولُ اللهِ ﷺ يَمُدُّهَا وَيَأْخُذُ بِهَا»  

suyuti:85-140b – Anas > Kānat Liá Dhuʾābah > Liá
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السيوطي:٨٥-١٤٠b –

" عَنْ أَنَسٍ قَالَ: كَانَتْ لِى ذُؤَابَةٌ فَقَالَتْ لِى أُمِّى: لاَ أجْزُّهَا، كَانَ رَسُولُ الله ﷺ يَمُدُّهَا وَيَأخُذُ بِهَا ".  

أبو نعيم