Both have been declared absconders by an accountability court in the corruption cases.
Nawaz Sharif's wife and former first lady, Begum Kulsoom Nawaz, breathed her last on Tuesday after fighting a long battle with cancer.
Her sons, Hassan and Hussain Nawaz will not be able to attend her funeral prayers in Lahore on account of corruption charges and arrest warrants levelled at them.
The funeral prayers were attended by her sons Hassan and Hussain, brother-in-law Shehbaz Sharif, former ministers Chaudhry Nisar and Ishaq Dar among others.
Sharif's sons - Hasan and Hussain - have decided not to return to the country to attend their mother's funeral.
The three-time Premier, his daughter Maryam Nawaz and son-in-law Mohammad Safdar, now serving prison terms on corruption charges, were granted parole by the Punjab government to attend Begum Kulsoom's funeral. Sharif and two of his family members are now serving prison terms in a corruption case. She was also seen reading from the Holy Quran for the departed soul of her mother. For the sake of uninterrupted traffic flow, special arrangements were also made outside Jattiumra.More news: Bomb explosion kills 50 people in Afghanistan, say TV channels
More news: Mets' David Wright To Play One More Game Before Retiring
More news: U.S. identifies two sets of Korean War remains, says Mattis
People continued to arrive at Jati Umra to express grief and offer sympathy to the Sharif family.
Many workers were seen sobbing while everyone praised the noble personality, suave and humanitarian nature of Begum Kulsoom Nawaz.
The three-time former prime minister, Maryam and Safdar were transported to Jati Umra on a special plane from Nur Khan Airbase Rawalpindi in the early hours of Wednesday after the Punjab government's home department issued their release order.
Condolences continued to pour in for the Sharif family, upon Kulsoom Nawaz's demise. "In case of a delay in Begum Kulsoom's funeral, the parole will be further extended", the spokesperson added.
The Home Department yesterday initially increased the parole limit to three days with effect from 12midnight Wednesday, but later extended it to five days (until Sunday midnight) to enable the incarcerated Sharifs to participate in the last rites of Begum Kulsoom.