كتاب النكاح
8  
Marriage
Bulugh al-Maram 1054
Abu Dawud reported something similar from Ibn 'Abbas (RA) and he added:
"or blow into it," [at-Tirmidhi graded it Sahih (authentic)].
وَلِأَبِي دَاوُدَ : عَنْ اِبْنِ عَبَّاسٍ نَحْوُهُ , وَزَادَ : { أَوْ يَنْفُخْ فِيهِ } وَصَحَّحَهُ اَلتِّرْمِذِيُّ 1‏ .‏
Reference : Bulugh al-Maram 1054
In-book reference : Book 8, Hadith 1054
English translation : Book 8, Hadith 1065
Hadith Text
Reference