These are the three elder Mazin sisters, Souad, Tukha & Ferial, members of one of the last actively performing Ghawazee families. This clip is from the 1967 film 'Al Zawja al Thania' (The Second Wife الزوجة الثانية ). The film tells the story of a nasty village mayor (Salah Mansour) who tires of his first wife and forces Abdulla (Shukry Sarhan) who is one of the villagers to divorce his own wife, Fatima,(Suad Hosni) so the mayor can marry her and bear a male heir. Turns out that Fatima is already pregnant by her husband so the headman has a fit and is paralysed and Fatima restores everything to the way it should be.
Many thanks to Morocco of NY for the ID.