Question: What do these authors use in the form of proof for credit given to the other religion  ?
Sentence: Thus, commenting in 1734 on the passage in the Qur'an, "I have called her Mary; and I commend her to thy protection, and also her issue, against Satan driven away with stones", George Sale stated: "It is not improbable that the pretended immaculate conception of the virgin Mary is intimated in this passage.
Answer in sentence: yes