As long as you are the only one drinking from it, it is OK providing that you don’t breathe into it.

Can we drink from bottle?Or we must have all the time with us when we go out a cup?

Etiquette, Morals and Heart-Softeners | February 5, 2014 2:28 pm
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While drinking from a glass of water, is it permissible to hold the glass with the left hand and placing the right hand at the bottom of the glass as a support?
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It is Haram or Makroh to lying with one leg crossed over the other?