If told by the meat seller that the meat sold is halal, can we consume it or should we investigate furthur?

Assalamu alaikum,

Islam Question and Answer - Meat from dubious restaurants (http://www.islam-qa.com/en/ref/20805)

Islam Question and Answer - Can he buy meat from a non-Muslim butcher who says that it is halaal? (http://www.islam-qa.com/en/ref/52800/halal meat)

Hope this helps.

I was told by a holder of Islamic Degree from Medina University it is not required to research. And if the seller is a muslim of whom you know no deciet or evil, then it`s even Haram to doubt him, if you read Surah Al-Hujuraat.