"I am sorry to hear about Mr Arun Jaitley's passing. My condolences to his family and friends. May he rest in peace." Rahul Gandhi tweeted.
Jaitley, 66, died at the All India Institute of Medical Sciences (AIIMS) here on Saturday, where he was undergoing treatment.
In a condolence message to Jaitley's wife Sangeeta, Gandhi said that in his illustrious career spanning over four decades, Jaitley left his mark on politics.
"Although his voice will no longer reverberate within the hallowed portals of Parliament, we will remember his presence," he said in the letter.
"Your family is in my thoughts and prayers. I wish you peace and strength during this difficult time," Gandhi said.