Advani, 97, admitted to Apollo Hospital in Delhi
His current condition is reported as stable
He's been hospitalized several times in recent months
Admitted to the hospital again on December 14th
He received the Bharat Ratna award earlier this year
The award ceremony was held at his residence
PM Modi visited Advani's residence on his birthday
Advani served as BJP president multiple times
He also served as Home Minister and Deputy PM
Born in Karachi, he joined the RSS in 1942