A woman and her son hold firecrackers during Diwali, the Hindu festival of lights, in Mumbai, India, November 4, 2021. REUTERS/Francis Macarenhas 

Mahraj Narsinghdas, 75, sits on a chair beside candles and oil lamps outside his home during Diwali, the Hindu festival of lights, in Karachi, Pakistan November 4, 2021. REUTERS/Akhtar Soomro 

Houses are lit up with lanterns and lights as they celebrate the annual Hindu festival of Diwali at a slum in Mumbai, India, November 3, 2021. REUTERS/Francis Mascarenhas TPX IMAGES OF THE DAY 

A woman fills her basket with freshly picked marigold flowers, used to make garlands, and offer prayers, before selling them to the market for the Tihar festival, also called Diwali, in Kathmandu, Nepal November 2, 2021. REUTERS/Navesh Chitrakar TPX IMAGES OF THE DAY 

People watch as firecrackers burn during Diwali, the Hindu festival of lights, in Mumbai, India, November 4, 2021. REUTERS/Francis Macarenhas 

A boy lights candles on a rangoli, or mural made out of coloured powders outside his home during Diwali, the Hindu festival of lights, in Karachi, Pakistan November 4, 2021. REUTERS/Akhtar Soomro 

Girls hold burning sparklers during Diwali, the Hindu festival of lights, in Karachi, Pakistan November 4, 2021. REUTERS/Akhtar Soomro 

A man and his daughter watch as firecrackers burn during Diwali, the Hindu festival of lights, in Mumbai, India, November 4, 2021. REUTERS/Francis Macarenhas 

Decorative lights are seen in the balconies of a high-rise during Diwali, the Hindu festival of lights, as the coronavirus disease (COVID-19) pandemic continues, in Noida, November 4, 2021. REUTERS/Anushree Fadnavis 

Residents light fireworks in a neighbourhood of Kolkata to celebrate Diwali, the festival of lights, India, November 4, 2021. REUTERS/Rupak De Chowdhuri 

A woman offers prayers to a cow during Gai Tihar as part of Tihar celebrations in Kathmandu, Nepal, November 4, 2021. REUTERS/Monika Deupala TPX IMAGES OF THE DAY 

A man lights a firework during Diwali, the Hindu festival of lights, in Karachi, Pakistan November 4, 2021. REUTERS/Akhtar Soomro 

A boy lights fireworks in a neighbourhood to celebrate Diwali, the festival of lights, in Kolkata, India, November 4, 2021. REUTERS/Rupak De Chowdhuri TPX IMAGES OF THE DAY 

A woman carrying empty baskets walks through the field as she heads to pick marigold flowers, used to make garlands, and offer prayers, before selling them to the market for the Tihar festival, also called Diwali, in Kathmandu, Nepal November 2, 2021. REUTERS/Navesh Chitrakar 

A dog smeared with vermilion powder sits with his handler after being worshipped during Kukur Tihar as part of Tihar celebrations, at police canine training centre in Kathmandu, Nepal, November 3, 2021. REUTERS/Navesh Chitrakar 

People shop at a crowded market ahead of Diwali, the Hindu festival of lights, during the ongoing coronavirus disease (COVID-19) pandemic, in Mumbai, India, November 2, 2021. Picture taken with a slow shutter speed. REUTERS/Niharika Kulkarni 

People wearing face masks shop for lanterns at a market ahead of Diwali, the Hindu festival of lights, during the ongoing coronavirus disease (COVID-19) pandemic, in Mumbai, India, October 28, 2021. REUTERS/Niharika Kulkarni