Caring Imran Najeeb offered his mother Zainab Begum a kidney after her own suffered damage and were only functioning at 25 per cent.
But she refused because she didn't want him to put his own life "at risk'' by helping her.
Bank manager Najeeb, 34, then told his mother he was already donating his kidney anyway - and was selling it on EBAY.
Najeeb then took advantage of the fact his mother doesn't speak good English and showed her a picture of a kidney he got from Google - and told her it was his.
He told her: "Look mum - I'm selling my kidney on eBay and someone's going to pay me £10,000 for it."
His tactic worked when mum Zainab, now 52, replied: "Why would you sell your kidney to a complete stranger when you could give it to me?"

The pair have now undergone their respective operations and are recovering well.
Najeeb, from Blackburn, Lancs, had been in contact with Royal Preston Hospital's transplant recipient co-ordinator Fiona Biggins for some time about his desperation to donate his kidney to his mum.
The Skipton Building Society branch manager said he had offered his stubborn mother his kidney as soon as she needed a transplant.
He said: "But although my mum initially agreed, she then changed her mind and told me she didn't want to take my kidney.
"She said if anything happened to me, she would never forgive herself. We were both trying to be selfless but I desperately wanted to donate to her.
"I even asked the doctors if I could donate anonymously without my mum knowing but they told me they couldn't legally do this."
The family's ordeal began around eight years ago when Zainab began feeling ill, lost weight and started suffering from headaches and had high blood pressure.
Tests revealed Zainab had kidney damage and she was referred to hospital where specialists discovered her kidneys were only functioning at 25 per cent.
Zainab ended up on haemodialysis at hospital three or four times a week and the mum-of-six and grandmother of 13 lost out on quality time with her family.
Najeeb said: "Dialysis was physically and emotionally draining for my mum.
"She was also losing out on family time with her children and grandchildren as every second day, she was in hospital for four or five hours a time."
Najeeb is one of six siblings and is the eldest son.
Even though his dad and brothers and sisters were willing to be tested as suitable kidney matches, Najeeb felt it was his duty.
He said: "As the eldest son and brother, I felt it was my responsibility and I didn't let any of my brothers and sisters take the tests.
"But after my mum refused to let me donate my kidney, we had no choice but to let her remain on dialysis.
"She became very tired and drained and suffered from mood swings and life was very difficult."
Things came to a head when Najeeb overheard his mum talking to his cousin in Pakistan on the phone and discussing the possibility of buying a kidney and having the transplant abroad.
"My mum got angry and asked why I was selling my kidney when she needed one.
"That was the moment of truth. It was through anger her true emotions came out.
"I realised she did want my kidney and it was just concern for me that was stopping her.
"As a child, you sometimes have to play your parents. I had to do this to trick her into accepting my kidney as I was just so desperate to help her."
Tests - which took around 12 months to complete - revealed Najeeb was a perfect match and the transplant was performed in Manchester.
Najeeb, who is married to Shubnum and has two daughters, said: "I asked my wife if she was OK with me doing this and she was.
"We had the discussion about what if I passed away and I told her to forgive me if that happened.
"She made a big sacrifice as she was willing to lose her husband and the father of her children if things went wrong.
"But I looked at my daughters who were aged six and two at the time and felt everything would be fine.
"Both my mum and I made a great recovery. We now have one kidney each and are really well and enjoying life.
"I am living proof that if you help a parent or loved one by giving them a kidney, there is every chance you'll be fine.
"You can live a full and healthy life with one kidney."