Kalchakra-Mandala-Thanka

The main tantric practices can be summarised in the "Four Purities":

1. Seeing one's body as the body of the deity

2. Seeing one's environment as the pure land or mandala of the deity

3. Perceiving one's enjoyments as bliss of the deity, free from attachment

4. Performing one's actions only for the benefit of others (bodhichitta motivation, altruism)

Wikipedia

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