Renowned for an ascetic lifestyle and recognized by his long white beard and traditional black cap, Edhi was a hero to the poor but infuriated some religious leaders for his refusal to give preferential treatment to Muslims above minorities.
Thousands of people, including high-profile politicians and government officials, gathered at the National Stadium to attend Edhi's funeral prayers on Saturday.
"He never established a home for his own children", said his wife Bilquis, who manages the foundation's homes for women and children.
A statement issued by the Sindh Institute of Urology and Transplant (SIUT) said that Edhi was one of the 2,000 people who had pledged their body organs after death and the Edhi family donated both his eyes after he died at SIUT on Friday.
President Mamnoon Hussain and Prime Minister Muhammad Nawaz Sharif have expressed deep grief and sorrow over the sad demise of Abdul Sattar Eidhi.
According to details, the governor, in a condolence message to his son Faisal Edhi, recounted enormous services Sattar Edhi rendered for the cause of humanity. "The state continues to fail to understand Edhi and what his work was about", said one Twitter user identified as Basma.
Edhi famously approached his life with simplicity, honesty and hard work.
He was a protuberant Pakistani philanthropist, social activist and humanitarian.
Pakistan's celebrated philanthropist Abdul Sattar Edhi, who was also the savior of Geeta, a mute and deaf Indian girl who was stuck in Pakistan for more than a decade.
Edhi, who was born Gujarat in 1928, moved to Karachi after the Partition, where he tried selling clothes for a while.
Edhi had been suffering from kidney failure since 2013 and was on dialysis.
In 1989, Edhi received the Nishan-e-Imtiaz from the Government of Pakistan. "Our graves will benefit the mentally disturbed, we shall stand guardian over them forever", he wrote in autobiography 'A Mirror to The Blind".
Edhi's foundation also provides technical education to the disadvantaged, religious education for street children, consultations on family planning and maternity services, as well as free legal aid, financial and medical support to prisoners and the handicapped.
Earlier this year, Yousafzai, the youngest Nobel Prize Laureate, launched a campaign for Edhi to get the Nobel Peace Prize in 2016. He was honoured with the Ramon Magsaysay Award for public service in 1986.