ג צָרִיךְ לִקְרוֹתָהּ כֻּלָּהּ, וּמִתּוֹךְ הַכְּתָב; וְאִם קְרָאָהּ עַל פֶּה, לֹא יָצָא. וְצָרִיךְ שֶׁתְּהֵא כְּתוּבָה כֻּלָּהּ לְפָנָיו לְכַתְּחִלָּה, אֲבָל בְּדִיעֲבַד אִם הִשְׁמִיט הַסוֹפֵר בְּאֶמְצָעָהּ תֵּבוֹת, אֲפִלּוּ עַד חֶצְיָהּ, וּקְרָאָם הַקּוֹרֵא עַל פֶּה, יָצָא. הַגָּה: אֲבָל אִם הִשְׁמִיט תְּחִלָּתָהּ אוֹ סוֹפָהּ, אֲפִלּוּ מִעוּטָהּ, לֹא יָצָא (רַ"ן); וַאֲפִלּוּ בְּאֶמְצָעָהּ דַּוְקָא דְּלֹא הִשְׁמִיט עִנְיָן שָׁלֵם, (בֵּית יוֹסֵף בְּשֵׁם א"ח); אֲבָל בְּיוֹתֵר מֵחֶצְיָהּ, אֲפִלּוּ הֵן כְּתוּבוֹת, אֶלָּא שֶׁהֵן מְטֻשְׁטָשׁוֹת וְאֵין רִשּׁוּמָן נִכָּר, פְּסוּלָה.
3 You need to read the Megillah entirely and from a scroll; and if you read it by heart you do not fulfill your obligation. You need to have the whole scroll in front of you in the first place, but if the Sofer left out in the middle some letters even until half of it (the Megillah) and you read it, then the one who read it by heart fulfills his obligation. Rema: even if (the Sofer) left out letters from the beginning or the end, even if he left out just a little, one does not fulfill one's obligation (if you read from it by heart) [the R"an]. And even in the middle, specifically, where an entire topic is not left out [Beis Yosef]. However, if more than half (was left out), (or) even if the letters were written but they were unclear/blurry and their writing was not recognizable, it is pasul.