English Translation
He kissed his daughter on the forehead.
The primary meaning of “kening” is “eyebrow” and the secondary one is “forehead”. I also looked up “kening” in Google Images, and most of the images are eyebrows, not forehead.
“Kening” is derived from Minangkabau (West Sumatra), so “kening” may not be used across the nation. Google Images suggests that “dahi” would be a safer way to refer to a “forehead”.