Minimum amount to give a Pauper who is travelling from the town: Shabbat 118a
Source for giving whatever one can, even if that amount is minimal: Bava Metzia 31b
The rabbis enacted in Usha that one should not give away more than 20% of his assets as tzedakah while alive, lest he become needy: Ketuvot 50a [per Tosafot אל; Rashi seems to say 20% of assets]; Ketuvot 67b [sounds like assets]
The mitzvah is to support the needy, not to enrich them: Ketuvot 67b
Supporting the needy in line with their original standard of living: Ketuvot 67b
Hillel supporting a pauper with a horse and herald because that is what the pauper had before suffering financial difficulties - and running before the horse himself when he could not find a herald: Ketuvot 67b
The people of a village in the Upper Galil giving what appeared to be a large amount of meat and wine to support a pauper who came from a wealthy family: Ketuvot 67b
Rabbi Nechemyah was approached by a pauper for meat and wine consistent with his earlier lifestyle. Rabbi Nechemyah shared lentils with him, and the pauper died. Rabbi Nechemyah bemoaned the man's pampered state; he should have accustomed himself to less: Ketuvot 67b
A pauper asked Rava for fattened chicken and aged wine, because that was his diet before he became impoverished. Rava expressed concern for the communal burden; the pauper replied that the food of the needy comes from Hashem, not truly from people. Then Rava's sister - whom he had not seen for 13 years - visited, and brought fattened chicken and aged wine. Rava apologized and invited the pauper to eat: Ketuvot 67b
Mar Ukva would give 400 zuz to a pauper every Erev Yom Kippur. One year he sent it via his son, who reported that the pauper didn't need it; the pauper was using aged wine as a floor treatment! Seeing the man's lifestyle, Mar Ukva doubled the sum: Ketuvot 67b
When he was dying, Mar Ukva gave away half of his funds for tzedakah: Ketuvot 67b
Giving in private
Giving tzedakah in Public, vs. in Private: Shabbat 104a, Moed Katan 16b, Chagigah 5a; Ketuvot 67b
Giving tzedakah to a woman in private: Chagigah 5a
Mar Ukva's wife was protected from having her feet singed when she and Mar Ukva hid (in an oven) from the pauper they were secretly helping. This was because she was always available for the needy, and because she gave them food rather than money: Ketuvot 67b
Rabbi Abba avoiding embarrassing the needy by carrying coins in a bag over his shoulder, allowing the needy to take without embarrasment but looking out to prevent non-needy people from taking: Ketuvot 67b
A person who is arrogant will end up in Gehennom, even if he gives tzedakah in secret: Sotah 4b-5a
Circumstances of the gift
Better to hire paupers for a job than to purchase an eved: Bava Metzia 60b
Even paupers are required to provide tzedakah: Gittin 7b
What to do with someone who possesses assets, but refuses to use them and instead asks for tzedakah: Ketuvot 67b
What to do with someone who needs tzedakah and refuses to accept it: Ketuvot 67b
Giving tzedakah before the Pauper needs it badly: Chagigah 5a
Giving food rather than money: Ketuvot 67b
The importance of being available for the needy at all times: Ketuvot 67b
Mar Ukva's wife was protected from having her feet singed when she and Mar Ukva hid (in an oven) from the pauper they were secretly helping. This was because she was always available for the needy, and because she gave them food rather than money: Ketuvot 67b
Is a donor empowered to earmark tzedakah for specific purposes: Bava Metzia 78b
Rabbi Chanina sent four zuz to a pauper each Friday. One Friday he sent it with his wife, who overheard someone in the pauper's home discussing whether to use silver-coloured or gold-coloured tablecloths. Rabbi Chanina expressed gratitude for people who trick others into giving tzedakah, as otherwise people would sin by not giving tzedakah: Ketuvot 67b-68a
Punishment for pretending to be blind or lame, or starving, in order to receive tzedakah: Ketuvot 68a
Punishment for accepting tzedakah one does not need: Ketuvot 68a
Motivation for giving
Giving tzedakah in the hope of getting a specific prayer answered: Pesachim 8a; Rosh HaShanah 4a