The people used to pray with the Prophet ﷺ tying their Izars around their necks because of their small sizes and the women were directed that they should not raise their heads from the prostrations till the men had sat straight. (Using translation from Bukhārī 814)   

كَانُوا يُصَلُّونَ مَعَ النَّبِيِّ ﷺ وَهُمْ عَاقِدُونَ أُزُرَهُمْ مِنَ الصِّغَرِ عَلَى رِقَابِهِمْ فَقِيلَ لِلنِّسَاءِ لَا تَرْفَعْنَ رُءُوسَكُنَّ حَتَّى تَسْتَوِيَ الرِّجَالُ جُلُوسًا  

I saw the people tying their wrappers over their necks like children due to the narrowness of the wrappers behind the Messenger of Allah (May peace be upon him) during prayer. Someone said: Body of women, do not raise your heads until the men raise (their heads). (Using translation from Abū Dāʾūd 630)   

لَقَدْ رَأَيْتُ الرِّجَالَ عَاقِدِينَ أُزُرَهُمْ فِي أَعْنَاقِهِمْ مِثْلَ الصِّبْيَانِ مِنْ ضِيقِ الْأُزُرِ خَلْفَ النَّبِيِّ ﷺ فَقَالَ قَائِلٌ يَا مَعْشَرَ النِّسَاءِ لَا تَرْفَعْنَ رُءُوسَكُنَّ حَتَّى يَرْفَعَ الرِّجَالُ  

I heard the Messenger of Allah ﷺ say: One of you who believes in Allah and in the Last Day should not raise her head until the men raise their heads (after prostration) lest they should see the private parts of men. (Using translation from Abū Dāʾūd 851)   

رَسُولَ اللهِ ﷺ يَقُولُ مَنْ كَانَتْ مِنْكُنَّ تُؤْمِنُ بِاللهِ وَالْيَوْمِ الْآخَرِ فَلَا تَرْفَعْ رَأْسَهَا حَتَّى يَرْفَعَ الرِّجَالُ رُءُوسَهُمْ كَرَاهِيَةَ أَنْ يَرَيْنَ مِنْ عَوْرَاتِ الرِّجَالِ