Salam alaikum.

We have seen many shias denying that Umar ibn al-Khattab was the husband of Umm Kulthum bint Ali ibn Abi Taleb.  This historical fact is something that shia minds couldn’t accept. It’s hard to claim at one hand that Umar was disbeliever, the one who killed Fatima, the one whos daughter killed prophet (sallalahu alaihi wa ala alihi wa sallam), and on other hand to say that Ali married his daughter from Fatima to this man.

This fact of marriage in itself is sufficient proof to reject all those mendacious claims against sayidina Umar ibn al-Khattab. But is there any shia that want to accept the truth?! Unfortunately their blind following to owners of turbans force majority of them to close their eyes to well known facts of history.

May Allah Taala guide all lost souls to real Islam.

Muhaqiq al-Ardabili in his “Majmaul faidat”  (11/529-530):

عن جعفر عن أبيه عليهما السلام قال : ماتت أم كلثوم بنت علي عليه السلام وابنها زيد بن عمر بن الخطاب في ساعة واحدة لا يدري أيهما هلك قبل ، فلم يورث أحدهما من الآخر وصلى عليهما جميعا

“From Jafar from his fathers (alayhuma salam): Umm Qulsum bintu Ali (alayhi salam) and her son Zayd ibn Umar ibn al-Khattab died in same hour, it wasn’t known which one from them died first, and non of them inherited to other, and (funeral) pray was done for both of them at one time”.

This was also narrated by:

Muhaqiq Sabzawari in “Kifayatul ahkam” (2/879); Sayed Ali Tabatabai “Riyadul al-masail” (12/664); Jawhari in “Jawahir al-kalam” (39/308); Sayed Ali Bahbabani “Fawaidul aliya” (1/79-80); Muhammad Sadiq Ruhani “Fiqhu sadiq” (24/496); Sheikh Toose “Tahzib al-ahkam” (9/362-363); Hurr al-Amili “Wasael ush shia” (26/314); Sayed Burjardi “Jamiul ahadethu shia” (3/348).

And here links to articles regarding this issue:

http://www.ahlelbayt.com/articles/sahabah/umm-kulthoom

http://www.ahlelbayt.com/articles/sahabah/rebuttal

Here you can see screen shot from official site of Abul-Qaseem al-Khui

Question: Is it authentic that second caliph married daughter of imam Ali (alaihi salam)?

Answer: This is what came in history and narrations.

Kulayni narrated in his “al-Kafi” (5/346):

عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ هِشَامِ بْنِ سَالِمٍ وَ حَمَّادٍ عَنْ زُرَارَةَ عَنْ أَبِي عَبْدِ اللَّهِ ( عليه السلام ) فِي تَزْوِيجِ أُمِّ كُلْثُومٍ فَقَالَ إِنَّ ذَلِكَ فَرْجٌ غُصِبْنَاهُ .

(Chain) from Abu Abdullah (alaihi salam) that he said regarding marriage of Umm Qulsum: “That was vagina that was steal from us”.

Hadith is good (hasan) per Majlisi.

And here the same question answered by board of ayatolla Fadlullah. And answer is: That was reported in authentic narrations