The power of the blessing of an ordinary individual: Berachot 7a; Megillah 15a
The power of a Torah Scholar: Megillah 27b; Chagigah 5b
Responding to a blessing, "And to you, too!": Megillah 27b
The power of a blessing also affects neighbors of the blessed party: Eruvin 18b
Curses
The power of an ordinary person's curse: Megillah 15a, 28a
The power of a Torah scholar's curse, even if it is issued without cause: Makkot 11a
The power of a Torah scholar's curse, even if it is issued conditionally, and the condition does not come true: Makkot 11a
The impotence of a curse issued without cause: Makkot 11a
The power of a curse also affects neighbors of the cursed party: Eruvin 18b-19a Avimelech's "blessing" to Sarah resulted in Isaac's blindness: Megillah 15a, 28a Bilam's attempts: Berachot 7a
Knowing the moment of Gd's anger: Berachot 7a King David's curse of Achitofel: Makkot 11a Eli's curse of Samuel: Makkot 11a R' Elazar cursing R' Yosi Ben Durmaskit's eyes to fall out, then healing him: Chagigah 3b Rav cursing Karna to have a horn emerge from his eyes: Shabbat 108a Rav cursing Shemuel to be son-less: Shabbat 108a R' Yehudah saying, "May a curse befall one who feeds his father out of Paupers' Tithe: Kiddushin 32a
R' Yishmael B"R Yosi cursed those who would imitate a legal method which R' Chanina alone could practice properly, with Askera Disease: Niddah 20a-b
The punishment: Temurah 3b-4a
Cursing a Kuti: Makkot 8b
A Kuti who curses: Makkot 8b
Cursing a Eved Kenaani: Makkot 8b
A Eved Kenaani who curses: Makkot 8b
Considering the act of cursing another person, using Gd's Name, a deed-less violation, regarding the possibility of punishment in a human court: Makkot 16a; Temurah 3a, 3b-4a
Cursing one's Parents
Comparing this to "blessing" Gd: Kiddushin 30b
A child who is uncertain which of two men is his father, and curses both together: Makkot 16a
