Importance of Clean Speech
Verses in Tanach
Ramban Shemot 30:13
Rashi Bereishit 17:22, 18:2, 19:37, 39:6
Talmud / Midrash and commentaries
Ketuvot 8b
Niddah 52a
Pesachim 3a-b
Sanhedrin 68b
Shabbat 33a
Yerushalmi Ketuvot 1:8, 5:7, 5:11
Yerushalmi Sanhedrin 8:1
Tosafot Rosh haShanah 8a s.v. Lavshu
Tosafot Sotah 5b s.v. Ha
Post Talmud / Midrash, Pre-Rishonim
Mishneh Torah and commentaries
Rishonim [Pre-"Code of Jewish Law"]
Tur, Shulchan Aruch ["Code of Jewish Law"] and Commentaries
Shulchan Aruch Orach Chaim 53:25
Shulchan Aruch Even haEzer 25:2
Kitzur Shulchan Aruch 150:1, 151:6
Acharonim [Post-"Code of Jewish Law"]
Recent Authorities
To add sources or to suggest topics for source material, please e-mail me [Mordechai Torczyner] at: 
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