טו אֵין הַכּוֹתֵב חַיָּב עַד שֶׁיִּכְתֹּב בְּדָבָר הָרוֹשֵׁם וְעוֹמֵד כְּגוֹן דְּיוֹ וְשָׁחוֹר וְסִקְרָא וְקוֹמוֹס וְקַנְקַנְתּוֹם וְכַיּוֹצֵא בָּהֶם. וְיִכְתֹּב עַל דָּבָר שֶׁמִּתְקַיֵּם הַכְּתָב עָלָיו כְּגוֹן עוֹר וּקְלָף וּנְיָר וְעֵץ וְכַיּוֹצֵא בָּהֶם. אֲבָל הַכּוֹתֵב בְּדָבָר שֶׁאֵין רִשּׁוּמוֹ עוֹמֵד כְּגוֹן מַשְׁקִין וּמֵי פֵּרוֹת. אוֹ שֶׁכָּתַב בִּדְיוֹ וְכַיּוֹצֵא בּוֹ עַל עֲלֵי יְרָקוֹת וְעַל כָּל דָּבָר שֶׁאֵינוֹ עוֹמֵד פָּטוּר. אֵינוֹ חַיָּב עַד שֶׁיִּכְתֹּב בְּדָבָר הָעוֹמֵד עַל דָּבָר הָעוֹמֵד. וְכֵן אֵין הַמּוֹחֵק חַיָּב עַד שֶׁיִּמְחֹק כְּתָב הָעוֹמֵד מֵעַל דָּבָר הָעוֹמֵד:
15 One who writes is not liable until he writes with something that makes a lasting mark, such as ink, black [dye], copper sulfate, red dye, gum and that which is like them. And [he must] write on something upon which the writing lasts, such as leather, parchment, paper, wood or that which is similar to them. But one who writes with something that does not make a lasting mark – such as liquids or fruit juice; or writes with ink or that which is similar to it upon vegetable leaves or anything that does not last – is exempt. He is not liable until he writes with something lasting upon something lasting. Likewise, one who erases is not liable until he erases lasting writing from on top of something lasting.