Sahl bin Sa'd (may Allah be pleased with him) narrates that the Companions (may Allah be pleased with them) used to pray with the Messenger of Allah (peace and blessings be upon him) with their waist-wrappers tied around their necks because they were small, and the women were told: "Do not raise your heads in the prayer until the men have sat up straight."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3300
It is narrated from Sayyiduna Sahl bin Sa'd (may Allah be pleased with him): I saw the men with their waist-wrappers tied around their necks like children, because their waist-wrappers were small, praying behind the Messenger of Allah (peace and blessings be upon him). Someone said: O assembly of women! Do not raise your heads until the men have sat up straight.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3301
Sayyidah Asma' bint Abi Bakr (may Allah be pleased with her) narrates: I heard the Messenger of Allah (peace and blessings be upon him) say: "Whichever of you women believes in Allah and the Last Day should not raise her head from prostration until the men have raised their heads, lest her eyes fall upon the private parts of the men."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3302