Response to the sixth contention: namely, the claim that the prohibition was imposed only for a particular reason—fear that people might be tempted by the person in the grave—and that, since this fear has now vanished, the prohibition has likewise lapsed!
I know of no scholar who has espoused this notion except the author of Iḥyāʾ al-Qubūr; he seized upon it and made it his chief argument for rejecting the aforementioned hadiths and the consensus of the imams. He says (pp. 18–19):
“As for the prohibition against building mosques over graves, they are unanimous that it is based on two reasons. The first is that it may lead to defiling the mosque(1). The second—held by the majority, indeed by everyone, including those who mentioned the previous rationale—is that it can lead to misguidance and temptation with respect to the grave; for when the grave of a saint renowned for goodness and piety is situated inside the mosque …”