I had a lock of hair, and my mother said to me, "I will not cut it off, for the Messenger of Allah ﷺ used to pull it and take hold of it."
حدثنا محمد بن العلاء حدثنا زيد بن الحباب عن ميمون بن عبد الله عن ثابت البناني
كانت لي ذؤابة فقالت لي أمي لا أجزها كان رسول الله ﷺ يمدها ويأخذ بها
No references are available.
[Its chain is daif] Bayhaqi narrated it in Shuab al-Iman, no. 6485, from the hadith of Abu Dawud, with the same chain. Maymun bin Abdullah is majhul (Taqrib).