This text might be suggested: "Why do you observe the splinter in your brother’s eye and never notice the plank in your own? How can you say to your brother, “Brother, let me take out the splinter that is in your eye,” when you cannot see the plank in your own? Hypocrite! Take the plank out of your own eye."
But that cuts out the next part of that sentence. Here it is in its entirety:
Take the plank out of your own eye first, and then you will see clearly enough to take out the splinter that is in your brother’s eye.’
So according to the whole sentence, indeed the according to the whole parable, it's not a prohibition to correct someone when necessary to do so. Rather, it is a practical preparation for doing so, in order to be more effective at it. That's actually important, because true charity means willing the other's good, rather than abandoning him/her to whatever he/she prefers, and its periils. It's never pleasant, especially on the receiving end, but if I'm about to walk off a cliff, I'd rather be warned about it.(Ref: Luke 6:39-42, from Universalis.com)