 He's asking what is Fatima's Mas'af and who holds it? Yes, the Mas'af of Fatima brings about a lot of controversy because people assume when they hear the word Mas'af, they assume that it's the Quran of Fatima and that couldn't be further from the truth. After Rasulullah sallallahu alayhi wa alaah died as a form of consolation, a form of consoling Fatima to al-Zahra because of that sadness that had enveloped her, Allah subhanahu wa ta'ala would provide her through the dictations of the angel in the same way Maryam received from Jibra'il. Likewise Fatima is a muhadith and that this particular book, the Mas'af of Fatima is seen as being three times the length of the Holy Quran, three times the size of the Holy Quran. But it doesn't contain a single verse from the Holy Quran. Rather it talks about events that are to happen at the present and at the future and different types of knowledge which is given to Ahlul Bayt, and the person who helps us describe with this is Imam Ali ibn Mitalab, and this remains with Ahlul Muhammad sallallahu alayhi wa alaah. So the current holder would be Imam Mahdi.