NAB Lahore has apparently arranged a helicopter to airlift the two convicts from Lahore to Islamabad, so they can be taken to NAB's Rawalpindi prison.
"They are coming home and I would not let them go to jail. But I want the Pakistani nation to know that I am doing this for you".
"We must change the country's future.This opportunity will not come again", he urged and asked his followers to support him at every step.
"Over 100 police commandos will be deployed at the airport on Friday to avert any untoward incident", senior Lahore police officer Sardar Asif said.
The crackdown on the PML-N, whose leaders have accused the military of attempting to destabilize the party, comes a day before the party founder, ousted Prime Minister Nawaz Sharif, is due to return to Pakistan where he faces arrest.
Hussain Nawaz was talking to media about her mother's current condition, he said, "After exactly one month, she [my mother] has opened her eyes". Her sedatives were being reduced. "I only request that please remember her in your prayers".
Sharif has also said the military's intelligence wing, the Inter-Services Intelligence agency, is intimidating his party's candidates to switch loyalties, or to run as independents, ahead of the July 25 poll.
Nawaz and Maryam, convicted by an anti-graft court in Islamabad on July 6, were sentenced to 10 and seven years, respectively, in the Avenfield reference.
Pakistan Muslim League-Nawaz (PML-N) leader Maryam Nawaz Sharif tweeted, "Told my kids to be courageous in the face of oppression".
Party spokesperson Marriyum Aurenzeb told PTI that police arrested the workers, mostly from Lahore, to stop them from welcoming Sharif at the airport. But kids will still be kids.
The photograph, which was tweeted by a Pakistani journalist, and retweeted by Nawaz Sharif's daughter, shows Maryam breaking down as her father Nawaz Sharif keeps his hand on Begum Kulsoom's forehead, hours before they head to the airport to return to Pakistan, where they would be arrested upon arrival.
Dozens of PML-N activists were arrested earlier this week and appeared in court on Wednesday, accused of plotting unrest to coincide with Sharif's return.