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Ibn 'Abbas said (may Allah be well pleased with him and his father): "When the Prophet (ﷺ) drank (Allah bless him and give him peace), he used to take two breaths.”
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا عَلِيُّ بْنُ خَشْرَمٍ، قَالَ: حَدَّثَنَا عِيسَى بْنُ يُونُسَ، عَنْ رِشْدِينِ بْنِ كُرَيْبٍ، عَنْ أَبِيهِ، عَنِ ابْنِ عَبَّاسٍ: أَنَّ النَّبِيَّ صلى الله عليه وسلم كَانَ إِذَا شَرِبَ، تَنَفَّسَ مَرَّتَيْنِ.
sunnah.com