(Imām Bukhārī narrates): Muhammad ibn Kathīr narrated to us, he said: Sufyān informed us, from Abī Hāzim, from Sahl ibn Sa'd, he said: The people used to pray with the Prophet ﷺ, and because their sheets were small, they had tied these sheets in knots around their necks. So it was said to the women: Do not raise your heads until the men have sat up straight.
حَدَّثَنَا مُحَمَّدُ بْنُ كَثِيرٍ، قَالَ أَخْبَرَنَا سُفْيَانُ، عَنْ أَبِي حَازِمٍ، عَنْ سَهْلِ بْنِ سَعْدٍ، قَالَ كَانَ النَّاسُ يُصَلُّونَ مَعَ النَّبِيِّ صلى الله عليه وسلم وَهُمْ عَاقِدُو أُزْرِهِمْ مِنَ الصِّغَرِ عَلَى رِقَابِهِمْ فَقِيلَ لِلنِّسَاءِ لاَ تَرْفَعْنَ رُءُوسَكُنَّ حَتَّى يَسْتَوِيَ الرِّجَالُ جُلُوسًا.
Reference: Sahih Al Bukhari 814