M People Lyrics - African to English translation needed

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M People released and album in 1994 called Elegant Slumming with a track called "Don't Look Any Further." There seems to be an african language of some sort in 2 lines of the song. I was wondering if anyone could translate these 2 lines for me?

Here they are:

Day o umba day o mambu ji ay o
Day o umba day o na jam bay um bay o

IS there anyone who can help with this translation?

Thanks,
Cary