"Earlier this month I was advertising on Gumtree to sell my brand new iPhone," said Ahsan Kabir, who lives in the Sydney suburb of Lakemba.
He says a potential buyer contacted him last Friday.
"The robber told me that he wants to buy this phone for his sister as a birthday gift and he will come at 6 pm to my unit," said Ahsan.
The buyer arrived at his house at around 9 pm. "When he entered my unit, he tried to check the serial number of the phone."
Ahsan said that the man then attempted to show him that there was some kind of problem, and that's when he says the man took out a knife from his pocket and placed on Ahsan's throat saying "Sorry mate, give me the phone."
Ahsan's wife Tania was present with his six-month-old daughter. He said that when Tania saw the knife she screamed loudly - their five-year-old son also began crying.
Source: Supplied
"This situation made the robber scared. I just like push him... then he stabbed on my throat, hands and stomach."
"After attacking me he was shouting Help... Help. Then another robber came from the ground floor and kicked the next door of my unit," said Ahsan.
He said then they went away.
Ahsan was admitted to hospital after calling emergency services. He released the next day.
Source: Supplied
The thieves escaped without the iPhone but the family says it has been a terrifying experience.
Forty-year-old Ahsan Kabir is a Bangladeshi Australian who came to Australia as a student in 2005.
Ahsan has some simple advice for others selling online, "Don't let them in the house."
