The parents, in their late 20s, are travelling across South-east Asia as buskers. A 90-second video clip shows a man holding a baby by the feet, swinging it between his legs and raising it above his head.
Two Russians have been detained in Malaysia over a street act that involved swinging their baby by the legs and throwing it up into the air.
The pair were questioned over alleged abuse of the four-month-old girl, police told news agency AFP.
A video of one of their performances has gone viral, prompting the police to act, the BBC reported.
The parents, in their late 20s, are travelling across South-east Asia as buskers. A 90-second video clip shows a man holding a baby by the feet, swinging it between his legs and raising it above his head.
He also throws the baby into the air several times, briefly letting go. Next to him are a group of other Europeans playing instruments and chanting.
Kuala Lumpur police chief Mazlan Lazim told AFP the baby was unharmed, with no sign of injuries.
The BBC said there's been a growing trend of Westerners travelling in poorer Asian countries begging for money and other support to sustain their trip.
Often referred to as "begpackers", they're increasingly a source of confusion or anger for local populations, the BBC said.