It is narrated from the Mother of the Believers, Sayyidah Umm Salamah (may Allah be pleased with her), that she said: "One of us would menstruate in a single garment; then, when the day of her purification came, she would wash off what had stained it (of blood) and then pray in it. Yet today one of you sets her servant free from other work to wash her clothes on the day of her purification."
According to Imam al-Tabarani (may Allah have mercy on him): No one narrated this hadith from Mujahid (may Allah have mercy on him) except Khalid, and al-Minhal is alone in narrating it from Khalid.
Hadith Referenceالمعجم الأوسط / باب الألف / 2192
Hadith Gradingمحدثین:رجاله موثقون
Hadith Takhrij«قال الطبراني: لم يروه عن مجاهد إلا خالد تفرد به المنهال «الإعلام بسنته عليه الصلاة والسلام بشرح سنن ابن ماجه الإمام، ج 3، ص 137»» «قال الهيثمي: رجاله موثقون «مجمع الزوائد ومنبع الفوائد، ج 1، ص 282»» «أخرجه ابن خزيمة فى «صحيحه» برقم: 278، والطبراني فى «الكبير» برقم: 933، 966»