How do we know infant baptism is not taught in the Bible?

In Mark 10:13-16, Jesus welcomes the little children, indicating that they too belong to the kingdom of God. However, the passage does not mention baptism of infants or any prerequisites for coming to Him. It showcases that Jesus valued the faith of children and did not require them to meet specific conditions before approaching Him. The absence of a reference to infant baptism directly in this scripture implies that it is not a biblical mandate, but rather a concept derived from traditions that do not align with the simplicities of faith outlined in scripture.