From Thumamah, from Anas that: "The Prophet ﷺ would breathe three times in the vessel." Another chain from Anas bin Malik: "The Prophet ﷺ would breathe three times in the vessel." He said: This Hadith is Hasan Sahih.
أَنَّ النَّبِيَّ ﷺ كَانَ يَتَنَفَّسُ فِي الإِنَاءِ ثَلاَثًا قَالَ هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ