[747] Then, Bhāradvāja, this occurred to me: 'Suppose I were to meditate on the breathless absorption (appānakaṃ jhānaṃ).' So then, Bhāradvāja, I stopped the in-breaths and out-breaths through my mouth, through my nose, and through my ears. When the in-breaths and out-breaths were stopped through my mouth, my nose, and my ears, there was a violent painful feeling in my head. Just as if, Bhāradvāja, a strong man were to bind a wrapping about my head with a tough leather strap, so too, Bhāradvāja, when the in-breaths and out-breaths were stopped through my mouth, my nose, and my ears, there was a violent painful feeling in my head. And yet, Bhāradvāja, my energy (vīriya) was aroused and unflagging, my mindfulness (sati) was established and unmuddled; but my body was overwrought and not tranquil, because I was overwhelmed by that painful striving.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.