Sanjay Gandhi, youngest son of former prime minister Indira Gandhi, was killed in a plane crash in June 1980, while Rajiv Gandhi was killed by a human bomb during an election rally in Tamil Nadu in May 1991.
Khan also took a dig at BJP's prime ministerial candidate Narendra Modi and said that a man who is not loyal to his wife will betray the nation.
"Jo apni biwi ka nahin ho saka, wo desh ka kya hoga (Someone who could not be loyal to his wife, how can he be loyal to the nation)," he added.
State authorities Saturday, however, said poll panel's restrain order on the minister would be complied with. The Election Commission has also put restrictions on the campaigning of BJP general secretary and close Modi aide Amit Shah for his "hate speeches".
