ISTANBUL — Pope Leo XIV visited Istanbul’s iconic Blue Mosque on Saturday but didn’t stop to pray as he focused more on bolstering ties with Orthodox patriarchs and promoting courageous steps for Eastern and Western churches to be united.

Leo took his shoes off and, in his white socks, toured the 17th-century mosque, looking up at its soaring tiled domes and the Arabic inscriptions on its columns as an imam pointed them out to him.

The Vatican had said Leo would observe a “brief moment of silent prayer” in the mosque, but he didn’t. An imam of the mosque, Asgin Tunca, said he had invited Leo to pray, since the mosque was “Allah’s house,” but the pope declined.

Later, Vatican spokesman Matteo Bruni said: “The pope experienced his visit to the mosque in silence, in a spirit of contemplation and listening, with deep respect for the place and the faith of those who gather there in prayer.”

Leo, history’s first American pope, was following in the footsteps of his recent predecessors, who all made high-profile visits to the Sultan Ahmed Mosque, as it is officially known, in a gesture of respect to Turkey’s Muslim majority.

Papal visits to Blue Mosque often raise questions

But the visits have always raised questions about whether the pope would pray in the Muslim house of worship, or at the very least pause to gather thoughts in a meditative silence.

When Pope Benedict XVI visited Turkey in 2006, tensions were high because Benedict had offended many in the Muslim world a few months earlier with a speech in Regensburg, Germany, that was widely interpreted as linking Islam and violence.

The Vatican added a visit to the Blue Mosque at the last minute in a bid to reach out to Muslims.

He observed a moment of silent prayer, head bowed, as the imam prayed next to him, facing east.

Benedict later thanked him “for this moment of prayer” for what was only the second time a pope had visited a mosque, after St. John Paul II visited one briefly in Syria in 2001.

There were no doubts in 2014 when Pope Francis visited the Blue Mosque: He stood for two minutes of silent prayer facing east, his head bowed, eyes closed and hands clasped in front of him. The grand mufti of Istanbul, Rahmi Yaran, told the pope afterward, “May God accept it.”

With Leo, though, even the Vatican seemed caught off guard by his decision not to pray. The Holy See had to correct the official record of the visit after it originally kept the planned reference to him pausing for prayer.

Speaking to reporters after the visit, the imam Tunca said he had told the pope: “It’s not my house, not your house, (it’s the) house of Allah.” He said he invited Leo to worship “But he said, ‘That’s OK.’ ”

“He wanted to see the mosque, wanted to feel (the) atmosphere of the mosque, I think. And was very pleased,” he said.

In the afternoon, Leo prayed with the spiritual leader of the world’s Orthodox Christians, Patriarch Bartholomew, at the patriarchal church of Saint George.

There, they prayed the doxology, a hymn of praise and glory to God, and signed a joint declaration vowing to take courageous steps on the path to unity including to find a common date for Easter.

Eastern and Western churches split in the Great Schism of 1054, a divide precipitated largely by disagreements over the primacy of the pope. While ties have warmed, they remain divided and other schisms have formed.

“It is our shared desire to continue the process of exploring a possible solution for celebrating together the Feast of Feasts every year,” the joint statement said, referring to Easter.