Somabhai said that his younger brother had left the house and the family because he believed in the concept of 'world is a family'.
Modi's family members did not know much about him as he has never maintained active contact with them after he left the house, he said.
In his yesterday's affidavit Modi has stated that he has no information about the assets and liabilities of his wife.
His another brother Prahlad said that Modi has never denied that he is a married man and in the earlier election forms he had kept the column of wife blank.
"He has never denied it (marriage). In the earlier election (affidavits) the column (about spouse) would have been left blank due to some reasons. Whether he did it intentionally or not that is his personal issue," Modi's Prahlad said.