It was narrated from Hafsah, from Umm 'Atiyyah, from the Prophet, that he granted a concession to the woman whose husband has died, allowing her to use Qust and Azfar when purifying herself following her menses.
Explanation & Benefits
Hafiz Muhammad Ameen
Qist and azfar are types of fragrances that were used in that era. The same ruling applies to other perfumes as well. Their use is prohibited during the waiting period (‘iddah); however, it is permissible after the completion of menstruation (hayd). (For details, see Hadith: 3564)
Source: Sunan Nasa'i: Translation and Benefits by Shaykh Hafiz Muhammad Amin Hafizullah, Page: 3572