The second point:
None of those who compiled accounts of al-Husayn and his killing, such as Abū Bakr ibn Abī al-Dunyā, Abū al-Qāsim al-Baghawī and others, mentioned that his head was taken to Ascalon or Cairo. Abū al-Khattāb ibn Dihyah made a similar statement in his book entitled al-‘Ilm al-Mashhūr fī Fadā’il al-Ayyām wa-l-Shuhūr (Well-Known Knowledge concerning the Merits of Days and Months). He stated that those who wrote about al-Husayn’s killing unanimously agreed that the head had not been taken far afield. He mentioned this after stating that the shrine in Cairo was a fabricated falsehood with no basis. He discussed this at length and also addressed related matters in his discussion of the day of ‘Āshūrā’.
The third point:
The account given by reliable scholars and historians is that the head was taken to Medina and buried beside his brother al-Hasan.
It is well known that al-Zubayr ibn Bakkār, author of the Book of Genealogies, Muhammad ibn Sa‘d, al-Wāqidī’s secretary and author of al-Tabaqāt, and others renowned for their learning, trustworthiness and extensive knowledge were more knowledgeable about this subject and more truthful in what they transmitted than the ignorant, the liars, and certain writers of history whose knowledge and truthfulness cannot be trusted. Indeed, a man may be truthful yet lack the expertise in chains of transmission needed to distinguish acceptable reports from rejected ones. Or he may have a poor memory, or be suspected of lying or embellishing reports, as is the case with many chroniclers and historians