Undercover reporter Rizwan Syed recorded the speech whilst working for TV company Hardcash Productions in an investigation into Islamist militants in the UK.
Hammuda tells them: "One of the interpretations as to what this means is that towards the end of time there will be many wars like what we are seeing today.
A hardline Cardiff imam suspected of radicalising three young men, has told teenage worshippers that having sex slaves is "permissible in Islam".
An undercover reporter recorded Ali Hammuda, a cleric who organises halaqas (religious study circles) at the Al-Manar mosque was recorded telling children as young as 13 that the world is "close to the end of time".
His sermon comes two years after the three men, Nasser Muthana and Reyaad Khan, then 20, and Muthana's younger brother Aseel, then 17, left for Syria, where they are suspected of joining Islamic State (Isis).
Before they left Wales worshipped at the mosque where Hammuda still preaches.
Hammuda, who was born in Palestine but brought up in the UK, enticed children aged 13-18 to his halaqa with a poster promising an indoor football.
But during the study group for "brothers only" the mosque's English Islamic programmes officer interpreted a series of Hadith – sayings attributed to the Prophet Mohammed.
The imam's interpretation of a Hadith concerning slaves would shock many Muslims.
Miss Sandilands, of West Kilbride, Ayrshire, said: 'I'm delighted with the result. I was quite reluctant to go to a tribunal, because I had never done anything like that before.
A friend who also worked at the restaurant told the tribunal she had her hours increased at around the same time.
The restaurant was also said to be heading into a busy period and had hired a new member of staff.
Discrimination: Miss Sandilands, left, was asked by her manager to wear her hair down and dress so that she was 'easy on the eye' while serving customers.