Sunan an-Nasa'i, Volume 3, Book 21, Hadith 1893 (DarusSalam) ⓘ
Hammad reported from Ayyub: "And Hafsah said, from Umm 'Atiyyah: 'We put her hair in three braids."'
أَخْبَرَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، قَالَ حَدَّثَنَا حَمَّادٌ، عَنْ أَيُّوبَ، وَقَالَتْ، حَفْصَةُ عَنْ أُمِّ عَطِيَّةَ، وَجَعَلْنَا، رَأْسَهَا ثَلاَثَةَ قُرُونٍ .
also referenced under: Hadith 1892 (Reference) & Book 21, Hadith 75 (In-Book)