Amitabh Bachchan gestures during an event in Mumbai. File
A priest performs rituals as fans of Amitabh Bachchan participate in a special prayer for his speedy recovery. AFP
The news came as powerful Indian Home Minister Amit Shah revealed he had tested positive for coronavirus, which is infecting tens of thousands of people a day — and killing hundreds — in the world's second most-populous country.
More than 1.7 million people have now been infected in India and more than 37,000 have died, giving it the world's highest toll behind the United States and Brazil.
Bachchan's actor-son Abishek, who was admitted at the same time, will remain in hospital, while his daughter-in-law Aishwarya Rai and granddaughter Aaradhya were discharged last week.
They were the highest-profile family in India to contract the virus in a country that worships movie stars.
"I am back home. I will have to be in solitary quarantine in my room," Bachchan wrote on Instagram, saying he had tested negative.
He thanked his family, fans "and the excellent care and nursing" at the hospital, saying they "made it possible for me to see this day." At the time he said he had "mild" symptoms.
A fan of Amitabh Bachchan shows a tattoo depicting the actor as he participates in a special prayer for his speedy recovery in Kolkata. AFP
Bachchan's discharge came as Home Minister Amit Shah — Prime Minister Narendra Modi's right-hand man — said he had tested positive for the virus.
"On getting initial symptoms of coronavirus, I got myself tested and my report is positive," Shah tweeted.
"My health is fine, but on the advice of doctors I'm getting myself admitted to a hospital."
The 55-year-old called on everyone in contact with him over the past two days to get tested and isolate.
It was not clear if Shah had met Modi or other senior cabinet ministers in recent days. He was admitted to a hospital in Gurgaon, just outside the capital New Delhi, local media reported.
Bachchan, 77, idolised in India and affectionately known as "Big B," has worked for more than half a century in the film industry.
His release from hospital was cheered by his legion of fervent fans.
A fan participates in a special prayer as posters of Amitabh are reflected on his sunglasses. (R) Fans chant prayers in front of a statue depicting Amitabh. AFP
Hundreds of them gathered at the Amitabh Bachchan Temple — built by his fans in the city in 2001 and which has a life-size statue of the revered celebrity — in Kolkata on Sunday.
"Amitabh is our 'guru'. He is more than god to us," Amitabh Bachchan Fan Association secretary Sanjoy Patodiya told AFP on Sunday ahead of the actor's announcement.
"His fans are spending sleepless nights praying that their god gets well soon."
Aishwarya's husband, actor Abhishek Bachchan, and father-in-law, Bollywood icon Amitabh Bachchan, had tested positive to the coronavirus a day before, on Saturday, and have been admitted to the same hospital since then.
Earlier in the day, actor Abhishek Bachchan had tweeted to confirm that his wife Aishwarya and their daughter Aaradhya had been discharged from hospital after testing COVID-19 negative.
"T 3590 -I have tested CoviD positive .. shifted to Hospital .. hospital informing authorities .. family and staff undergone tests , results awaited .. All that have been in close proximity to me in the last 10 days are requested to please get themselves tested!" tweeted @SrBachchan.
Bollywood superstar Aishwarya Rai has tested positive for the coronavirus, a Mumbai city authority official said on Sunday, just a day after her actor father-in-law Amitabh Bachchan said he was in hospital with the infectious disease.
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