Sefer Chasidim Siman 101
Can copy this into an AI, or connect the whole library to your assistant. For deeper learning, you can directly use the original seforim, sites, and apps.
לא ישרטט אדם קונטרס על הספר מפני שהספר יש לו קדושה ולזה אין בו קדושה וכ"ש שאסור לסרוק עליו ראשו אפילו בחלק שבו:
Medieval Jewish mysticism, translated by Sholom Alchanan Singer. Northbrook, Ill. Whitehall Co., 1971
A man should not inscribe marginal notes in a book¹ par. 903, warning against the use of holy books for purposes other than study. because the book has sanctity and this has no sanctity. So much the more is it forbidden for him to comb his hair even over the blank area of the book.
footnotes: ¹ View infra,