Deprived Of Wisdom
Imaam Fudayl Ibn Iyaad (rahimahullaah) said: 'Whoever sits with a person of innovation has not been given wisdom'
Sheikh Saaleh Al-Fawzaan (rahimahullaah) commented on the above statement saying:
He (i.e. the one who sits with an innovator) is deprived of wisdom, and wisdom is understanding of the Religion of Allaah. The one who sits with ahlul bidah is deprived of understanding of the Religion as punishment for him.
[Source:Ittihaaful Qaaree Bitta'liqaat Alaa Sharh As-Sunnah Lil Imaam Barbahaaree (rahimahullaah) by Sheikh Saaleh Al-Fawzaan (hafidha-hullaah) (page: 318, Vol: 2)]
Taken from: http://salafitalk.net/st/viewmessages.cfm?Forum=9&Topic=5476&srow=41&erow=60