What was the Prophet Muhammad (saw)'s instruction to women who did not have a veil during religious gatherings and invocations on the two `Id festivals?
 Narrated Um `Atiya:                     We were ordered to bring out our menstruating women and veiled women in the religious gatherings and invocation of Muslims on the two `Id festivals. These menstruating women were to keep away from their Musalla. A woman asked, "O Allah's Apostle ' What about one who does not have a veil?" He said, "Let her share the veil of her companion."