Praying to Jesus' mother-- of course, that's permitted (and expected). It's just too obvious to be stated explicitly (except possibly as implied by one of the Ten Commandments). Perhaps the human authors of Scripture didn't anticipate anyone could be so blind as to not avail themselves of the opportunity.
This is a typical answer by catholics to justify the non-biblical teachings they espouse.
It doesn't even clearly tell me what prayers to say, much less exclude any particular entities who should not be the object of prayers.
Jesus did teach His disciples how to pray. To whom did He instruct us to pray to?
Praying to Jesus' mother-- of course, that's permitted (and expected).
Based exactly on what in the Bible?
If you attempt to appeal to the early church fathers you will find they are in contradiction on this and many other topics. Hence their writings are not what we should build our beliefs on.
It's just too obvious to be stated explicitly (except possibly as implied by one of the Ten Commandments).
There is nothing even hinted at in the Ten Commandments on praying to Mary.
There is however the prohibition of making an idol, or any likeness of what is in heaven above or on the earth beneath or in the water under the earth, you shall not worship them...
Perhaps the human authors of Scripture didn't anticipate anyone could be so blind as to not avail themselves of the opportunity.
Perhaps the human authors, guided by the Holy Spirit, knew not to include anything about praying/worshiping Mary as it was so obvious this was prohibited.