Hadith 3:142
Umm Salama said she told God’s messenger that she kept her hair closely plaited, and asked whether she should undo it when washing after sexual defilement. He replied, “No, it is enough for you to throw three handfuls over your head, then pour water over yourself, and you will be purified.” Muslim transmitted it.
وَعَنْ أُمِّ سَلَمَةَ قَالَتْ قُلْتُ: يَا رَسُولَ الله إِنِّي امْرَأَة أَشد ضفر رَأْسِي فأنقضه لغسل الْجَنَابَة قَالَ «لَا إِنَّمَا يَكْفِيكِ أَنْ تَحْثِي عَلَى رَأْسِكِ ثَلَاثَ حَثَيَاتٍ ثُمَّ تُفِيضِينَ عَلَيْكِ الْمَاءَ فَتَطْهُرِينَ» . رَوَاهُ مُسلم
Original Reference: Mishkat al-Masabih 438