Imam Ahmad ibn Hanbal would write Ta’widh and possessed a bowl and hair of the Prophet (sallallahu ‘alaihi wa sallam) as mentioned by his son ‘Abdullah ibn Ahmad ibn Hanbal in his Masa’il al-Imam Ahmad (1/447, no. 1622):
He (‘Abdullah ibn Ahmad ibn Hanbal) narrated to us, saying: I saw my father [Ahmad ibn Hanbal] writing Ta‘awidh [pl. of Ta’widh] for the one who was bald, as well as for his family and relatives for fever. He would write [them] for a woman when labour became difficult for her in a vessel or something delicate, and he would write the hadith of [‘Abdullah] ibn ‘Abbas [radhiallahu ‘anh]; except that he would do that when an affliction occurred. I did not see him do this before an affliction occurred. I saw him reciting incantation in water and giving it to a sick person to drink and pour part of it over his head. And I saw my father holding a strand of the Prophet’s hair (sallallahu ‘alaihi wasallam), and he placed it on his mouth kissing it, and I believe I saw him placing it on his head or his eye. Then he dipped it in water and drank it, seeking cure from it. I saw him taking a bowl of the Prophet (sallallahu ‘alaihi wasallam) which Abu Ya’qub ibn Isma’il ibn Sulayman ibn Ja’far sent to him. He washed it in a cistern of water, and then drank from it. I saw him, on more than one occasion, drinking some Zamzam water, and seeking cure from it, as well as wiping his hands and face with it.
1622 – حَدثنَا قَالَ رَأَيْت ابي يكْتب التعاويذ للَّذي يقرع وللحمى لاهله وقراباته وَيكْتب للمراة اذا عسر عَلَيْهَا الْولادَة فِي جَام اَوْ شَيْء لطيف وَيكْتب حَدِيث ابْن عَبَّاس إِلَّا انه كَانَ يفعل ذَلِك عِنْد وُقُوع الْبلَاء وَلم اره يفعل هَذَا قبل وُقُوع الْبلَاء ورأيته يعوذ فِي المَاء ويشربه الْمَرِيض وَيصب على رَأسه مِنْهُ وَرَأَيْت ابي يَأْخُذ شَعْرَة من شعر النَّبِي صلى الله عَلَيْهِ وَسلم فَيَضَعهَا على فِيهِ يقبلهَا واحسب ابي قد رَأَيْته يَضَعهَا على رَأسه اَوْ عينه فغمسها فِي المَاء ثمَّ شربه يستشفي بِهِ ورأيته قد اخذ قَصْعَة النَّبِي صلى الله عَلَيْهِ وَسلم بعث بهَا اليه ابو يَعْقُوب بن سُلَيْمَان بن جَعْفَر فغسلها فِي جب مَاء ثمَّ شرب فِيهَا ورأيته غير مرّة يشرب من مَاء زَمْزَم يستشفي بِهِ وَيمْسَح بِهِ يَدَيْهِ وَوَجهه