A banner in the Gombak campus cautions students from dating in the university compound.
It reads: "IIUM is an Islamic territory. No dating. Allah is watching us."
A visitor to the campus came across the banner and took a photograph of it.
However, an IIUM undergraduate said that the banner has not been put up by the university authorities.
"It was put up by Maaruf Club in conjunction with the Campus Dakwah Project during Ramadhan," the Daily Chillies.com quoted him as saying.
The club's aims, among others, are to encourage students to perform the good, avoid the bad and to monitor the students' oral conduct.