Sincerity

One: If we differ, our intentions should be that we are differing in the sincere hope of coming away with the truth. Our intentions should be sincere to Allah.

We should not differ just to release some hate or envy in our heart. We should not differ to embarrass someone like we may have been embarrassed.
Rasul Allah said, "Whoever learns knowledge - knowledge from that which should be sought for the sake of Allah - only to receive a commodity of the material world, he shall not find the fragrance of jannah on the day of resurrection." - An authentic hadith narrated by Abu Dawood in Kitab Al-Ilm.