Ailing Joe Jackson's Family Feuding Over His Will -- How Much Is At Stake

Joe Jackson, the patriarch of the most influential families in music history, is hanging on to life after suffering a life-threatening stroke

and series of heart attacks while celebrating his birthday in Brazil last month. And although the 87-year-old father of ten and lifelong husband of Katherine Jackson, 84, is reportedly out of the intensive care unit, the drama is just beginning: A source close to the Jackson family tells RadarOnline.com exclusively that there is tension growing amongst his kids over the terms of the ailing music man's will.

As RadarOnline.com reported, the divided siblings of late King of Pop Michael Jackson, rushed to be by their dad's side when they heard the heartbreaking news. Even Janet cancelled preparation for her Unbreakable World Tour to be by his side.

But according to the well-connected source, not all of the Jackson children were there for the right reasons.

"There is a lot of concern right now amongst all of them because no one knows for certain what the terms of his will are, but there is a great amount of money and property that they all would like a part of," says source.

In addition to Joe's money, which is estimated to be at a $500,000, the source adds that "god forbid he dies tomorrow, his kids all know that whatever he tells Katherine to do with their remaining fortune will be done. So they are trying to get in as good as possible with him while he is still alive."

RadarOnline.com reached out to Sham Ibrahim, a longtime friend of the family who was commissioned by late King of Pop Michael Jackson to do portraits and has since painted almost every one of the Jackson clan, about the rumors.

Although Ibrahim did not want to comment on the ongoing Jackson family feud, he did offer insight into Joe's relationship with his children – which has had its share of ups and downs.

"Listen, nobody is perfect," Ibrahim says. "Joe is set in his ways and even in his views on the world. Anything that he did was done out of love and because he wanted all his kids to be the best that they can."

"He may have been hard on them but it was because he loves them."