During the revelation of the Verse of Purification, Imam Ali, Lady Fatima, Imam Hassan, and Imam Hussain (as) were present under the sheet with the Prophet (as). What could be the reason for Lady Zainab's absence at that time?
Allah, The Glorious, Knows who should be included in this verse. We have no right to argue at all. We just submit to the orders of Allah (SWT). The great status of Lady Zainab (AS) is confirmed by authentic statements from the Infallible Imams (AS).
Wassalam.