Albert Barnes Commentary Mark 10:13

"And they were bringing unto him little children, that he should touch them: and the disciples rebuked them." — Mark 10:13 (ASV)

Should touch them. That is, should lay his hands on them, and pray for them, and bless them. Compare Matthew 19:13. It was common to lay the hands on the head of a person for whom a blessing was asked. See the case of Jacob, Genesis 48:14.