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Hundreds of men have expressed interest in the anti-smoking drive, including a non-smoker who was ready to start the habit just so he could take part.

Banners in Riyadh are advertising the campaign slogan: "Kicking the habit is on you, and marriage is on us."

In much of the Arab world, the groom alone bears the cost of a wedding.

The charity Purity says participants will complete a seven-day course to quit smoking.

'Sexist'

The name of the grand prize winner will be decided in a draw on 6 August. Twenty runners-up will get free furniture.

The high expense for a wedding means that Arab men often put off marriage until they have saved enough money to take a bride.

Some in Saudi Arabia have criticised the campaign, suggesting it might devalue what they consider a holy union, while others called the concept sexist.

But a spokesman for the charity said the aim was to create a smoke-free family.

"The fact that people are discussing the campaign means we have fulfilled our goal of spreading the word about it," said Salem al-Majdali.

It is estimated about a quarter of Saudi Arabia's 27.6 million residents smoke."(link here)