What is meant by ‘raising hands in dua’?
Is it a bid’ah?
After Salaah the Prophet (ﷺ) did not raise his hands when he made the dua’ and he never made dua’ in congregation. So raising the hands in dua’ after Salaah (any Salaah) and making the dua’ in jama’ah are both bid’ah. However there are instances when the Prophet (ﷺ) would raise his hands (not after salaah and not in jamah) if you are to raise your hands in such cases then this is not regarded as bid’ah. 
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