This answer says sins are attached to hair and devotees tonsure their hair when they visit temples to get rid of sins. It says Dharma Sindhu mentions the verse.
तीर्थोपवास कर्तव्य सिरसोमुन्दनानिच सिरोगतानि पापानि यान्तिमन्दनथो यतह्
tīrthopavāsa kartavya sirasomundanānica sirogatāni pāpāni yāntimandanatho yatah
Dharma Sindhu is a book written by Panditha Kashinaatha taking essence of various Dharma Sastras and Puranas. This is what preface of book says,
Drushtaa purva nibandhaatrirnaaya sindhu kramena siddharthaan
Praayena mula vachaannyujijjtya likhvaami baalabodhaaya
Having studied various ancient Sciptures and strictly based on the rudimentary facts delineated in those Root-Grandhas that the essence of Dharma Nirnayaas (Regulatoty Verdicts) is sought to be described.
So, this must be presumably present in Puranas or Smritis or Dharma Sastras.
Also, Dr. Sri Vaddiparti Padmakar, famous scholar in Telugu states, says the same in this video (in Telugu). I searched in Shiva Purana and Padma Purana but couldn't find any references for it.
My question is: What scriptures, such as Dharma Sastras or smritis or puranas or any authoritative Hindu scriptures, say Paapa or Sins are stored or attached to hair? Please don't answer from books by Acharyas or Swamijis.
Note: This question is not duplicate to this question or any such related question.