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I saw nothing but beauty
Bibi Zainab (SA)
The Qibla on this day was changed from Baytul Maqdas to the Holy Ka'bah in 2 A.H.
Night:
Recite 12 raka'ats (6x2), in each unit recite these 4 times: Sura al-Hamd, Sura al-Ikhlas, Sura al-Falaq, Sura an-Nas, Ayatul Kursi, Sura al-Qadr
Recite 6 raka'ats (3x2), in each unit after Sura al-Hamd recite Sura Yasin, Sura Mulk, and Sura al-Ikhlas
Recite the specific Ziarat of Imam Hussain for the 15th of Rajab, or Ziarat Waritha
Day:
Perform Ghusl on this day
Excerpt from 'Nafasul Mahmum':
(Tabari) Azdi says that Abu Zuhayr Abasi relates from Qurrah bin Qays Tamimi, that he says that I was on guard when the women of the family (of Imam) were passed by the spot of martyrdom of Imam Husayn (a.s.), their family and children. They started wailing and beating their faces. I can forget everything but can never forget the moment when Zainab (a.s.), the daughter of Fatemah (a.s.), passed by her brother Husayn (a.s.) and saw him fallen upon the ground.
She called out, 'O Muhammad! O Muhammad! Salutations of the heavenly angels be upon you! This is Husayn drenched in blood and cut asunder fallen down in the desert. O Muhammad! Your daughters are captivated and your progeny fallen martyred while the wind is sprinkling sand upon their bodies.' He (Qurrah) says that, by Allah! Her words made every friend and foes weep.