For Tayyibis: the infant Tayyib carried in a basket

[EasternQibla]

This topic is probably only relevant to Tayyibi Shia.
I found this delightful story (by Makrizi) of how the infant Tayyib was smuggled out of the palace:

Among the monuments of the Qarafa there is a small fountain and minaret, and it is known as the Masjid of Mercy (al-raḥma). Abu Turab al-Suwwal … was in charge of building it … And it was to this place that Abu Turab brought the son of al-Amir in a basket of reeds in which were dishes of cooked leeks and onions and carrots, and the baby in swaddling clothes was on the bottom with the food above him, and he brought him to the cemetery and the wet nurse suckled him in this mosque, and he concealed the matter from al-Hafiz until the baby grew up and began to be called Kufayfa, “little basket.” Later, after the death of Abu Turab, the boy was slandered to al-Hafiz by Abu ‘Abd Allah ibn al-Jawhari, and he took the child and opened his veins, and he died. Then al-Jawhari went to Damietta where he died in the year 528 [1134].
p47 in
https://web.archive.org/web/20150402123 ... 1384770478

However, in this version of the story Tayyib is killed by having his veins opened, which seems improbable to me. What do you make of this story - is it basically what you Tayyibis believe but without Tayyib being killed? Do you have any other versions of it, including Tayyib being called Kufayfa, “little basket”?

Many thanks,
Richard