Mark 10:15 is translated in the 8th Century translation of the gospels into Arabic that is found in Vatican Arabic MS13 in a remarkably clear and communicative manner. It says:

“Truly I say to you that anyone who does not make efforts to seek the kingdom of God and the simplicity of his heart and understanding is not like a child, he will not enter the kingdom and will not obtain any of its blessings.”

والحق اقول لكم ان كل من لم يسعا في طلب ملكوت اللـه ويصير بلاهه قلبه وذكاه نفسه مثل الطفل لا يدخل الملكوت ولن يصل الى شي من نعيمها

Source: Andrew Persson

See also Mark 9:12 in an early Arabic manuscript.