Musnad Ahmad

It is narrated from Hazrat Sahl bin Sa’d (may Allah be pleased with him) that I have seen those people who, due to the narrowness of their lower garments, used to tie knots of their garments around their necks like children, and they used to pray behind the Prophet Muhammad (peace and blessings be upon him) in this state. One day, someone said, “O group of women! Do not raise your heads from prostration until the men have raised their heads.”