Anti-apartheid hero Nelson Mandela’s condition remains ‘critical but stable’ on the 23rd day of his hospitalisation for a recurring lung ailment, even as a stream of people continued to flock the hospital here to pray for the recovery of the 94-year-old former president. Well-wishers were singing and saying prayers outside the Mediclinic Heart Hospital here and at Soweto former home of Mandela with cards, flowers, balloons, presents, teddy bears, artwork and posters.