References – SN 47.7: The Monkey   
Sutta / Saṃyutta Nikāya / SN 47: Satipaṭṭhānasaṃyutta / SN 47.7: Makkaṭasutta (1)

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“Why doesn’t the passage (SN 47.7) mention obsession with painful objects?” Answered by Ajahn Pasanno and Ajahn Karuṇadhammo. [Desire] [Aversion] [Right Mindfulness]

The Four Foundations of Mindfulness [2015], Session 16, Excerpt 3