From Luke 19:
As he rode along, the people were spreading their cloaks on the road;
and now as he was approaching the slope of the Mount of Olives, the whole multitude of his disciples began to praise God aloud with joy for all the mighty deeds they had seen.
They proclaimed: "Blessed is the king who comes in the name of the Lord. Peace in heaven and glory in the highest."
Some of the Pharisees in the crowd said to him, "Teacher, rebuke your disciples."
He said in reply, "I tell you, if they keep silent, the stones will cry out!"
From Matthew 21
When the chief priests and the scribes saw the wondrous things he was doing, and the children crying out in the temple area, "Hosanna to the Son of David," they were indignant and said to him, "Do you hear what they are saying?"
Jesus said to them, "Yes; and have you never read the text, 'Out of the mouths of infants and nurslings you have brought forth praise'?"