References – AN 7.50: Sex 
Sutta / Aṅguttara Nikāya / AN 7: Sattakanipāta / AN 7.50: Methunasutta

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“Are their multiple levels of brahmacariyā (celibacy)?” Answered by Ajahn Pasanno. [Celibacy] [Christianity] [Sensual desire] [Monastic life] // [Becoming]

Sutta: AN 7.50 Sexual Intercourse

The Teaching and the Training [2018], Session 2, Excerpt 2