1898An NasaiSahih (Darussalam)أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا حَمَّادٌ، عَنْ أَيُّوبَ، عَنْ حَفْصَةَ، عَنْ أُمِّ عَطِيَّةَ، نَحْوَهُ غَيْرَ أَنَّهُ قَالَ ثَلاَثًا أَوْ خَمْسًا أَوْ سَبْعًا أَوْ أَكْثَرَ مِنْ ذَلِكِ إِنْ رَأَيْتُنَّ ذَلِكِ " Something similar was narrated from Umm 'Atiyyah except, that he (the narrator) said:"Three times or five, or seven, or more than that, if you think that (is necessary)."Reference: Sunan an-Nasa'i 1888 In-book : Book 21, Hadith 71 English translation : Vol. 3, Book 21, Hadith 1889