A Zimbabwean man living in Yeoville, Johannesburg, warned his friend that he had put muti inside his wife's vagina to ensure that the man stays away from her.
According to myzimbabwe.co.zw, the friend ignored the warning and he and the woman ended up getting stuck together during sex.
Priscilla Ndlovu (34), who claims to be a resident at the same block of flats, said they heard screams from the room where the woman stays.
"At first we thought it was just the screams of sexual pleasure, but it turned to be screams for help," said Ndlovu.
The building's security forced the door open and saw the naked couple stuck together, pleading for help, but nobody could separate them.
An ambulance reportedly sped off from the building at high speed to get away from a crowd that had gathered to see if the rumours of the couple were true. It is not known if the couple were inside.
A sangoma said locking a woman with muthi was a common way of catching and punishing cheating lovers in Zimbabwean.
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