You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Buddhism

Context:
The precepts are not formulated as imperatives, but as training rules that laypeople undertake voluntarily to facilitate practice. In Buddhist thought, the cultivation of dana and ethical conduct themselves refine consciousness to such a level that rebirth in one of the lower heavens is likely, even if there is no further Buddhist practice. There is nothing improper or un-Buddhist about limiting one's aims to this level of attainment.

Question:
Precepts are not created as imperatives, but as what?

training rules