Next, I need to consider possible sources. The user is asking for an MP3, so they might be looking for a recitation or chanting. In Mahayana Buddhism, there are various scriptures and mantras. The "Karandavyuha Sutra" is a Mahayana text that includes a poem about the Buddha's body, which is sometimes referred to in devotional works. The term "Khisti" might be related to this. Alternatively, maybe there's a specific chant or mantra associated with Mahayana that's colloquially known as a "khisti" poem.