THE aging man in mud-splattered, frayed clothes has barely lowered his body onto the sidewalk when the money starts piling up. Heeding his call for donations for flood victims, Pakistanis of all classes rush to hand over cash to Abdul Sattar Edhi, whose years of dedication to the poor have made him a national icon.

He thanks each donor, some of whom ask to have their photo taken next to him. Four hours later, the crowd remains - and the equivalent of US$15,000 is overflowing from a pink basket in front of him.

Edhi has been helping the destitute and sick for more than 60 years, filling the hole left by a state that has largely neglected the welfare of its citizens. Part Mother Teresa, part Gandhi, with a touch of Marx, he is the face of humanitarianism in Pakistan.

Funded by donations from fellow citizens, his 250 centers across the country take in orphans, the mentally ill, unwanted newborns, drug addicts, the homeless, the sick and the aged. His fleet of ambulances picks up victims of terrorist bombings, gang shootings, car accidents and natural disasters.

Pakistani government acknowledges Edhi and other charities do the work that in other nations the state performs. The country has no national health service, insurance program or welfare system, and few state-run orphanages or old people's homes.

The foundation offers an alternative to charitable work performed by Islamist groups in Pakistan, some with alleged links to terrorism. The spread of these organizations has triggered concerns in the West, including their work in the aftermath of this summer's floods.

Edhi is a devout Muslim, but critical of Islamic clerics in general, not just extremists. He says they focus on ritual, preaching hellfire and defending the faith against imagined enemies, rather than helping the poor, which he says should be the cornerstone of all faiths.

The 80-something Edhi - he and his children disagree on his exact age - lives with his wife, herself a charity worker, in a tiny room in one of his welfare centers in Karachi, a bustling port city. His bed is a one-inch-thick (2.5cm-thick) mattress on a piece of wood.

"I am a beggar for the poor," he says, stained teeth showing in a wide smile, eyes sparkling after a week touring flood-hit areas. "Serving humanity is the biggest jihad. It is the real thing."

Edhi deals with birth and death, and almost everything in between.

Just above his bedroom, a maternity ward and an orphanage are home to 18 children, many of them abandoned in cradles outside his centers. They wear hand-me-downs from the city's rich. Edhi's wife, Bilquis, tries to get the children adopted, but few Pakistanis want to take girls or older children, she says.

The home was clean and bright, with plenty of toys and loving staff. But there was no place to play outside, and the roar of motorbikes from the lanes below was a constant backdrop.

Across town, workers at the Edhi morgue were dealing with the latest influx of bodies. They receive around 25 a day, half of which are never claimed - the city's unloved and unknown.

Working quickly but carefully, they cut the clothes from the bodies, lather them with a bar of soap from head to toe, rinse them with water from a jug, then wrap them in a white sheet. The bodies are bussed across town, prayed over and buried in unmarked graves.

The body of American journalist Daniel Pearl, killed by al-Qaida terrorists in Karachi in 2002, was picked up by an Edhi ambulance and taken to the morgue, the largest in the city of 14 million people.

The morgue is attached to a hospital for the homeless, a dispensary, a shelter for boys and women and children, even a wedding hall for the marriages arranged for children who have been looked after by the foundation.

"The poor can come here and get a solution to all their problems," says Ejal Hassan Zaidi, who had accompanied a neighbor to the morgue to collect the body of his 3-year-old daughter, killed in a hit-and-run incident hours earlier. "From the cradle to the grave."

Born in what is now India, Edhi and his parents moved to Pakistan in 1947 when that country was created as a Muslim state at the end of British colonial rule. The family was quite well-off - his father was a traveling salesman - and socially progressive.

In his biography, Edhi credits his mother for setting him on a humanitarian path. She urged him to give half his pocket money to someone poor every day and rebuked him if he didn't.

When she was dying, he looked after her, bathing her emaciated body and washing and braiding her hair - experiences that would also shape his life.

"The first night she spent in the grave, I dedicated my life to the service of mankind," he says.

Edhi started small. In 1951, he bought a tiny shop in a slum neighborhood in Karachi that he converted into a dispensary. Seven years later he bought a van that he used as an ambulance, writing "Poor Man's Van" on both sides.

He became intimately involved in the business of caring for the sick and dying. He would drive the ambulance to the scene of an accident to pick up the bodies, administer injections during a flu outbreak and travel across the country to help after earthquakes and other natural disasters.

Edhi's record of round-the-clock service and frugal lifestyle attracted donations, and he soon had a fleet of 14 ambulances. In the 1980s and 90s, he opened centers and ambulance services throughout the country. He donated US$200,000 to relief efforts after Hurricane Katrina, and his workers have also helped out in disasters in Asia and the Middle East.

Edhi does not accept donations from international organizations or governments, saying he doesn't need outside help and it is important for Pakistanis to help each other. He and his wife live simply off the interest from some savings.

The foundation does not produce detailed financial statements or annual reports. Edhi points to a wall of files in one office in which he says everything is accounted for. Donors do not seem to mind, such is their trust in him.

"You ask any Pakistani on the street, Edhi is totally credible with them," says Anjum Haque, executive director of the Pakistan Center for Philanthropy. "The success of the trust is down to Edhi himself."

Last year, donations to Edhi-run charities totaled around US$5 million, according to Faisal Edhi, the founder's son and trust member. A significant chunk of the funds comes from overseas Pakistanis, who want to donate to their homeland.

The lack of transparency has caused some concerns among others in the charity sector in Pakistan. Faisal Edhi acknowledges that some of their 13,000 employees - who receive very modest salaries - might skim money off donations. There have also been questions raised about the lack of professionalism and efficiency, specially as the foundation has grown.

Edhi has made no secret of his dislike of Pakistan's ruling class. He said he only let the politicians in so the children would have a party to enjoy.

"So what if the politicians are using me? They even use God," said Edhi, who sat by himself for most of the event. "Landowners, clerics, politicians. They are all looters. There is no fear in telling the truth."

There are questions about what will happen to the foundation when Edhi dies. He says his two sons and three daughters will take over, though without him at the helm, people may not give as generously.

For now, his children are more concerned about their father's health. Apart from an afternoon nap, he works just as hard as he did when he was in his 30s, they say.

"We tell him to take it easy, but he doesn't listen," says daughter Almas Edhi. "He wants to keep busy."