Laila Ali shares sweet photo of her dad with his granddaughter

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Family members, friends and fans alike are sharing their most treasured memories of Muhammad Ali on social media.

As Ali's health declined Friday evening, Ali's daughter Laila posted a nostalgic photo of the boxing legend with her daughter, Sydney, who was born in 2011.

SEE ALSO: 16 of the greatest Muhammad Ali quotes

"I love this photo of my father and my daughter Sydney when she was a baby!" Laila wrote. "Thanks for all the love and well wishes. I feel your love and appreciate it!!"

Laila is the eighth of Ali's nine children and the youngest of his daughters. She began her own undefeated professional boxing career at age 18. 

Ali's daughter Hana also shared several photos of Ali on Instagram Friday night, writing "God bless you, Daddy. You are the love of my life."

Muhammad Ali was admitted to a Phoenix-area hospital Thursday with respiratory issues. He passed away Friday evening.