
THE ISMÀ'ÌLÌ
 STATE 
the Twelvers followed) was
 that
 Ja'far
 al-Sadiqhad
 explicitly
 designated 
Isma'il as the next imam, and
 that
 a subsequent designation of another 
son—supposing it had occurred—could not validly supersede the first 
designation.
 Al-Afdal
 claimed
 that
 al-Mustansir had designated al-
Musta'li on his deathbed, but it was understandable
 that
 pious Isma'ilis 
should hold by the earlier designation
 of
 Nizar.
 Nevertheless, onNizar's 
death a difficulty arose. Nizar seems to have designated no one of his 
sons as his successor; at any
 rate,
 no Nizarid rose to claim the imamate. 
Who
 then
 was the imam of the rebel Isma'ilis (who now called them-
selves
 Nizaris)?
1 
Before
 long, many outsiders and probably some Nizari Isma'ilis 
believed
 that
 a son or grandson of Nizar had been smuggled out of 
Egypt
 and was kept secretly at Alamut. But we have no evidence
 that 
this was done, and some evidence
 that
 it was not: later, the Egyptian 
government could claim to know
 that
 all the male descendants of 
Nizar
 were quiescent; the notion of a descendant of Nizar being at 
Alamut
 had to take the form of his having been a posthumous son by 
a slave girl, and hence unknown in Cairo. At any
 rate,
 at Alamut no 
account seems to have been taken of the presence of any Nizarid. If we 
may judge by bits and shreds of evidence in later Isma'ili works, no 
imam at all was named, after Nizar. It was known
 that
 one of the 
Nizarids must be he, but not which one. Eventually, it seems, Hasan-i 
Sabbah, as the most important of the da'Is, was recognized as hujja, 
"proof", of the imam. The term hujja had already been used, at least 
informally, of a figure in the ideal spiritual hierarchy ranking next after 
the imam; now its use seems to have become more precise: Hasan was 
custodian of the Isma'ili mission until the imam should reappear, at 
which
 time he would point out the imam to the faithful. 
When this interpretation was adopted we cannot tell, but
 there
 is 
nothing against its having been adopted already in Hasan's lifetime; 
perhaps it was accepted at the same time as his leadership of the whole 
movement. We have still less way of knowing how Hasan himself felt 
about the doctrine, which presumably had not been taught him by any 
actual imam though it concerned the most ultimate
 truths,
 which 
should come by ta'llm. Yet the imam had been inaccessible to the faith-
ful
 before, in the days before the rise of the Fatimids, and Hasan might 
1
 The Nizaris are properly to be distinguished, not from "Musta'lians", but from the 
Tayyibis
 on the one
 hand
 and the Hafizls on the
 other.
 For a discussion of the schism see 
OA,
 pp. 62-9. 
458