Mr. Buhari also said he was pleased to have personally met the girls and assured them that the presidency will personally supervise the performance of those entrusted with their welfare.
"We've always made it clear that we will do everything in our power to ensure the freedom & safe return of our daughters" and all captives of Boko Haram, Buhari said on his Twitter account.
The 82 girls were freed Saturday in exchange for an unspecified number of detained Boko Haram suspects, Buhari's office said in a statement. Others have expressed anxiety over the fate of the 113 girls who remain missing after the mass abduction from a Chibok boarding school in 2014.
Ofeibea reports, "Many people say this is hope because the government is talking to the insurgents".
At the initial release of girls in October, the government said the release of another 83 would be coming soon.
Now in its eighth year, Boko Haram's insurgency has sought to create an Islamic caliphate in northeast Nigeria, as well as in the bordering regions of Cameroon, Chad and Niger. He emphasized that he considered all 82 of the girls to be his daughters "because a lot of them worship in my church". April 13, 2016: Boko Haram video appears to show some of the Chibok girls, and tearful mothers recognize their daughters.
Some relatives never lived to see their daughters' freed.
One of the sources close to the discussions, who do not want to be named, said President Muhammadu Buhari had directed for more action to bring the girls back home.
The presidency announced late on Saturday that months of talks with the jihadists had "yielded results" about six months after 21 other Chibok girls were freed with the help of worldwide mediators.
Though Boko Haram has abducted thousands of people during its eight-year insurgency that has spilled across Nigeria's borders, the Chibok mass kidnapping horrified the world and brought the extremist group worldwide attention. The brutality of the act sparked a global outcry, with the hashtag #BringBackOurGirls sweeping social media and unifying outraged citizens and political leaders alike, including then-first lady Michelle Obama.
Residents of Maiduguri also expressed joy yesterday, when they heard about release of 82 Chibok girls from their abductors.
December 24, 2016: Nigeria's president declares that Boko Haram has been crushed, driven from its last forest hideout.
The Bring Back Our Girls campaign said Sunday it was happy that Nigeria's government had committed to rescuing the 113 remaining schoolgirls, and it urged the president to "earnestly pursue" the release of everyone held by Boko Haram. Militants have killed more than 20,000 people, forced over 2.5 million to be displaced and adbucted thousands of women, forcing them into sexual slavery or marriages with its fighters.