The principle according to the faith they put forward reasonable Maturidiyah Asy’ariyah of understanding of the Islamic religion, whereas Islam is actually prosecuted sami’na Wa Atho’na (We Hear and We Obey) to the Qur’an, Assunnah, appropriate understanding of the companions rosulullah in worship to God.
the way to drink is above the law is sunnah , it is not obligatory. Because the original law of the actions of the Prophet sallallaahu’alaihi Wasallam is sunnah , because this way of drinking is faster to get rid of thirst, is more comfortable and relaxed and enjoys more when the water wet the throat.
Indeed, in the creation of the heavens and the earth, and the alternation of night and day there are signs for those who are wise, (namely) those who remember Allah while standing or sitting or lying down and they think about the creation of the heavens and the earth ( while saying): “O our Rabb, you did not create this in vain, Glory be to you, so keep us from the torments of hell “. [Ali ‘Imran / 3: 190-191].