Imam Ghazali (Allah have mercy on him) wrote in his book Ihya al Uloom ad Deen,

‘To benefit from the company of an individual it is essential that he has the following five characteristics,
1. Being Intelligent
2. Having exemplary morals (husnekhuluq)
3. Does not openly violates the Islamic laws (fasiq)
4. Is not an innovator (bida’ti)
5. Is not greedy of the the worldly (possessions).’

Ma’arif Muslih al Ummat ra, volume 1, page 131-2