Luke 18:15

And they brought unto him also infants
As well as grown persons, that were sick, to be healed by him:

that he would touch them;
in order, as some learned men think, to cure them of diseases that attended them; for one of the ways by which Christ healed persons, was by touching them; nor do we read of his touching in common for any other purpose, or of persons desiring him to touch them, or theirs, but for this end; in ( Matthew 19:13 ) it is read, "that he should put his hands on them"; and so the Arabic and Persic versions here read, in order to pray over them, and bless them: but neither in one place, nor the other, is any mention of their baptism, or of their being brought for such a purpose; nor can it be concluded from hence;

but when [his] disciples saw [it], they rebuked them;
the persons that brought the infants; (See Gill on Matthew 19:13).