Obstacles
At Sāvatthī, the Buddha tells the mendicants about five obstacles and hindrances, which he calls parasites of the mind that weaken wisdom: sensual desire, ill will, dullness and drowsiness, restlessness and remorse, and doubt. Someone who has not given them up cannot know what is for their own good, another’s good, or both. He compares the mind to a mountain river: if channels are opened on both sides, the current is dispersed and the river no longer runs swift and far; if the channels are closed, it keeps flowing strongly. Someone who has given up the five is like the undivided river.
A note on this text. Mentions ‘superhuman distinction in knowledge and vision’ as something the hindrances prevent, without explaining it.
The full text
Numbered Discourses 5.51 · 6. Hindrances · Obstacles · translated by Bhikkhu Sujato · public domain (CC0) · about 2 min · on SuttaCentral
So I have heard. At one time the Buddha was staying near Sāvatthī in Jeta’s Grove, Anāthapiṇḍika’s monastery. There the Buddha addressed the mendicants, “Mendicants!” “Venerable sir,” they replied. The Buddha said this:
“Mendicants, there are these five obstacles and hindrances, parasites of the mind that weaken wisdom. What five? Sensual desire … Ill will … Dullness and drowsiness … Restlessness and remorse … Doubt … These are the five obstacles and hindrances, parasites of the mind that weaken wisdom.
Take a mendicant who has feeble and weak wisdom, not having given up these five obstacles and hindrances, parasites of the mind that weaken wisdom. It is quite impossible that they would know what’s for their own good, the good of another, or the good of both; or that they would realize any superhuman distinction in knowledge and vision worthy of the noble ones. Suppose there was a mountain river that flowed swiftly, going far, carrying all before it. But then a man would open channels on both sides, so the mid-river current would be dispersed, displaced, and separated. The river would no longer flow swiftly, going far, carrying all before it. In the same way, take a mendicant who has feeble and weak wisdom, not having given up these five obstacles and hindrances, parasites of the mind that weaken wisdom. It is not possible that they would know what’s for their own good, the good of another, or the good of both; or that they would realize any superhuman distinction in knowledge and vision worthy of the noble ones.
Take a mendicant who has powerful wisdom, having given up these five obstacles and hindrances, parasites of the mind that weaken wisdom. It’s quite possible that they would know what’s for their own good, the good of another, or the good of both; or that they would realize any superhuman distinction in knowledge and vision worthy of the noble ones. Suppose there was a mountain river that flowed swiftly, going far, carrying all before it. But then a man would close up the channels on both sides, so the mid-river current would not be dispersed, displaced, and separated. The river would keep flowing swiftly for a long way, carrying all before it. In the same way, take a mendicant who has powerful wisdom, having given up these five obstacles and hindrances, parasites of the mind that weaken wisdom. It’s quite possible that they would know what’s for their own good, the good of another, or the good of both; or that they would realize any superhuman distinction in knowledge and vision worthy of the noble ones.”