Early in 1306 he modified or explained away those features of the bulls Clericis Laicos and Unam sanctam which were particularly offensive to the king.
The pope, in his opposition to the imposition of royal taxation upon the clergy, went so far in the bull Clericis laicos of 1296 as to forbid any lay authority to demand taxes from the clergy without his consent.
At the same time, he sent the famous bulls Salvator mundi, a sort of repetition of Clericis laicos, and Ausculta fili, which opened a new stage of the quarrel between the pope and king.
In 1296, by the bull Clericis laicos, the pope forbade the levying of taxes, however disguised, on the clergy without his consent.
On Clericis laicos: Gee and Hardy, Documents Illustrative of English Church History (London, 1896), 87 ff.