The Sharifs had been sent to the jail two months ago in the corruption case related to their purchase of four luxury flats in Avenfield House in London.
Kulsoom, who died Tuesday in a London hospital after a year-long battle with throat cancer, was laid to rest at the Sharif family's Jati Umra residence.
Kulsoom died Tuesday in a London hospital after a long battle with cancer. She was 68. She would be buried Friday.
The Sharif family had requested that a five-day parole be granted to the three.
Nawaz Sharif, his daughter and son-in-law granted parole, reached Lahore to attend Kulsoom's funeral
The duration of permission granted for the parole shall not exceed 12 hours. Police will be responsible for their security and safety.
The three will be granted parole from the time of Kulsoom's funeral prayers till her burial, Geo TV reported, citing the Interior Ministry sources.
Kulsoom, who was under treatment at London's Harley Street Clinic since June 2014, was placed on life support earlier Tuesday as her health deteriorated.
In an emotional appeal to the Pakistan Muslim League-Nawaz supporters, 68-year-old Sharif said he has left his ailing wife behind in a critical condition.
Kulsoom has opened her eyes after exactly one month, revealed her son, Hussain Nawaz in London.
Kulsoom, in her mid-60s had suddenly left for London for medical checkup at the time when nomination papers for NA-120 were being scrutinised.