A Mitzvah can lead to extra reward, beyond that for the original act: Kiddushin 40a
The importance of "light" Mitzvot: Nedarim 39b
The great reward, in this world and in the World to Come, for a "light" Mitzvah: Menachot 44a
The Mitzvot protect the Jews in the fashion of the wings which protect a dove: Shabbat 130a
Reward for individuals vs. Reward for communities: Taanit 9a-b
Whether there is reward in this world: Eruvin 22a; Kiddushin 39b
Gd delays the reward of the righteous: Eruvin 22a
If a person can lose his life for a sin, how much moreso he can gain life with a Mitzvah: Makkot 23a-b
Gd provides a reward even for a person who simply restrains himself from performing a transgression: Makkot 23b
If there is a reward for not eating blood, which is disgusting, how much more reward there must be for separating from those transgressions which a person desires!: Makkot 23b
A good person will get the fruits of his deeds: Kiddushin 41a
Hashem saving someone in the merit of another: Berachot 10b
The nature of the reward for Mitzvot which have a reward written in the Torah, and their link to the Resuscitation of the Dead: Kiddushin 39b
Whether one is rewarded more for Mitzvot under which one is commanded, or for which one is exempt and does anyway: Kiddushin 31a
Reward for the deeds of others: Eruvin 54b
Ability of the righteous to protect those who are less righteous: Eruvin 101a; Taanit 8a
Receiving long life, and a share in the World to Come, for having one more Mitzvah than transgression: Kiddushin 39b
Reward for not sinning when an opportunity presents itself [twice]: Yoma 86b; Kiddushin 39b-40a
Installments of reward vs. Lump Sum: Yoma 76a
Reward per intent, not necessarily achievement: Berachot 5b, 17a; Taanit 8b
Reward for both the intent and the act which went into a Mitzvah: Kiddushin 40a
Even fulfillment of non-essential parts of a Mitzvah, can prevent deserved punishment: Succah 38a
The reward for Mitzvot is "to the sky," but for Mitzvot with Intention for Heaven it is "above the sky": Pesachim 50b
One's intent must be for Heaven; one who practices for another motive would have been better off [Some Translate: would have had an easier time of things] if he hadn't been created: Berachot 17a [See Tosafot #3]