Dyo - The Ink for Sanctified Writings
Verses in Tanach
Talmud / Midrash and commentaries
Eiruvin 13a
Megilah 18b-19a
Niddah 20b
Sotah 20a
Tosafot Eiruvin 13a s.v. Kankantum
Tosafot Gittin 19a s.v. Kankantum
Tosafot Megilah 18b s.v. Kankantum
Tosafot Megilah 19a s.v. Al
Tosafot Sotah 17b s.v. Shene'emar
Post Talmud / Midrash, Pre-Rishonim
Mishneh Torah and commentaries
Rishonim [Pre-"Code of Jewish Law"]
Tur, Shulchan Aruch ["Code of Jewish Law"] and Commentaries
Biur Halachah Orach Chaim 32
Tur and Shulchan Aruch Orach Chaim 32:3
Tur and Shulchan Aruch Yoreh Deah 271:10
Acharonim [Post-"Code of Jewish Law"]
Recent Authorities
Contributors
Many of the references herein come from an article in the Journal of Contemporary Halachah XV, by R' Chaim Twersky.
To add sources or to suggest topics for source material, please e-mail me [Mordechai Torczyner] at: 
. All submissions are welcome and encouraged, and will be credited!
