However, from his hospital bed at the weekend, the pope continued to make phone calls to members of a Catholic parish in Gaza, Italian broadcaster Mediaset reported.
The pontiff is being treated at Rome's largest hospital in a designed suite for popes, which was also used by the late Pope John Paul II during his long papacy.
Pope Francis will spend a fourth day in hospital and stay there for as long as required, the Vatican has said.
The pope "slept well" overnight on Sunday, Vatican spokesman Matteo Bruni said.
A parish member said the pope had called on both Friday and Saturday and was in "good humour" but sounded "a bit tired".
