Abu Hurairah reported that Khawlah daughter of Yasar came to the Prophet ﷺ and said: Messenger of Allah, I have only one clothe and I menstruate in it, how should I do ? He said: When you are purified, wash it and pray in it. She asked: If the blood is not removed, (then what) ? He said: It is enough for you to wash the blood, its mark will not do any harm to you.

Abd Allaah bin Amr bin Al ‘As said “The Messenger of Allah ﷺ stopped during the Farewell Pilgrimage at Mina, as the people were to ask him (about the rites of Hajj). A man came and said Messenger of Allah being ignorant, I shaved before sacrificing. The Messenger of Allah ﷺ replied “Sacrifice, for no harm will come. ” Another man came and said “Messenger of Allah ﷺ, being ignorant, I sacrificed before throwing the pebbles. ” He replied “Throw them for no harm will come. ” He (the Prophet) was not asked about anything which had been done before or after its proper time without saying “Do it, for no harm will come. ”