No Limits

Today the Gemara cites a Mishna in Pe'ah 1:1, which was later incorporated into the morning blessing liturgy.

These are things that have no measure:

(By "no measure" the Gemara means things that have no limits according to Torah law. They have no minimum requirement below which would render performance of the mitzvah meaningless, nor do that have an upper limit which would render the performance to no longer be meritorious. In other words the slightest performance of the mitzvah would fullfill the obligation but doing more brings with it more merit)

1. Pe'ah (Leaving part of your crop for the poor)

2. Bikkurim (Bringing of the first ripened fruits to the temple)

3. The Re'ayon (The obligation to appear at the temple for the 3 festival with an offering)

4. Acts of Kindness

5. The Study of Torah

(Jewish Men are obligated to study Torah at all times. At the minimum, it is possible to fulfill the obligation by learning for a short period of time each day and night. Of course, the more one studies Torah, the greater his reward. This also applies to someone who works for a living and who is not a full time Torah Scholar. In other words, mitzvah points are gained by just squeezing in a few minutes a day to study Torah. One who has Free time on his hands however is obligated to Study Torah!)

- Chagigah 7a