The singer was performing at the Karachi Eat 2017 concert on Saturday night when he saw a group of men harassing a girl in the front row, news agency IANS reported citing a Geo news report.
Realising the incident unfolding before him, Mr Aslam walked up to the group of youngsters and scolded them.
"Have you never seen a girl before?" Mr Aslam asked.
"Your mother or sister could be here as well," added the "Tere sang yaara" singer.
The Karachi Eat 2017 concert also featured veteran singer, Abida Parveen.
The event comes at a time when many were lamenting on social media how Karachi Eat 2017 organisers declared the festival a 'family only' event.
The organisers, however, have not yet come out with any response on the incident.
(with inputs from IANS)
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