بُلُوغُ الْمَرَامِ
Bulugh al-Maram 1054
Marriage
وَلِأَبِي دَاوُدَ : عَنْ اِبْنِ عَبَّاسٍ نَحْوُهُ , وَزَادَ : { أَوْ يَنْفُخْ فِيهِ } وَصَحَّحَهُ اَلتِّرْمِذِيُّ [1] .
Abu Dawud reported something similar from Ibn 'Abbas (RA) and he added: "or blow into it," [at-Tirmidhi graded it Sahih (authentic)].
Sunnah.com reference: Book 8, Hadith 103