RIP Madiba: On Twitter, Nelson Mandela is bid farewell

Omar Abdullah: RIP Madiba. I'm honoured to have met you. Thank you for one of my most prized possessions - your signed book

Hillary Clinton: Nelson Mandela was a champion for justice & human dignity, with unmatched grace. I'll remember him as Madiba, truly an unconquerable soul.

My thoughts and love go out to the Mandela family. Rest in Peace Madiba. You will be missed, but your impact on this world will live forever

I want 2 give the world a hug I was told Mandeba just passed. Nelson Mandela R.I.P. Time for a well earned sleep.Condolences to his family

Beyonce Knowles: Thank you for all you have sacrificed to improve the lives of other human beings. Rest in peace.God Bless

One of our greatest leaders. Thank you for being the true meaning of compassion. May you be at peace now

Azhar Mahmood: The world has lost a true inspiration to human race. But he leaves a strong message and legacy behind

Shahnawaz Hussain: One of the greatest champions of anti- aparthied movement, Nelson Mandela is no more.His life is a great example of Principled Leadership

Nalaka Gunawardene: Nelson Mandela arrives in Heaven, the first lawyer to get there in 65 years - since Mohandas Karamchand Gandhi.

Rachel Williams: A wise man of incredible strength, whose legacy will live on through the beautiful lessons he taught. RIP Mandela

RIP Madiba: On Twitter, Nelson Mandela is bid farewell

Celebs Tweeted on Nelson Mandela's death.