Columbia subject headings:
Fasts and feasts--Islam.
Holy Saturday.
Islam--Customs and practices.
Special days--Religious aspects--Islam.
Harvard subject headings:
Fasts and feasts--Islam
Holy Saturday
Islam--Customs and practices
Special days--Religious aspects--Islam.
Princeton subject headings:
Days--Religious aspects--Islam.
Fasting--Religious aspects--Islam.
Hadith--Criticism, interpretation, etc.
Islamic law--Interpretation and construction.