阿罗汉归依于佛，阿罗汉有恐怖，何以故？阿罗汉于一切无，行怖畏想住，如人执剑欲来害己，是故阿罗汉无究竟乐。
《胜鬘师子吼一乘大方便方广经》
---------------------------------
An arhat, seeking refuge in the Buddha, is afraid. Why?An arhat lives in fear of the imminent state ofnothingness, as if it were a man holding a sword comingto cause him harm. Therefore, the arhat does not haveultimate happiness.
The Lion’s Roar of Queen Srimala, the single-vehicle greatexpedience, the corrective and extensive Sutra[Srimaladevi Simhanada Sutra]
---------------------------------
因为所有的二乘行者都会恐惧入了涅槃以后无所有，因此他们于一切无，行怖畏想住，心中实在还是有一点担心：虽然佛说入了无余涅槃不是断灭，可是我又没有证实涅槃中是否真的非断灭。所以他们于蕴处界等一切无，心中仍有怖畏。可是虽然有怖畏，却必须要进入一切无的状态中，要把蕴处界全部灭尽，才能成为无余涅槃。他们的看法是：五阴就是怨家仇人，五阴如痈、如刺、如杀，所以要灭尽五阴。就像有人拿著剑要来害自己一样，五阴就是那个拿剑来害自己的人，会导致自己无量劫中不断生死。可是把五阴灭了以后，那个无余涅槃中到底是什么？不知道！佛说无余涅槃中是真实、是不变异、是常住，可是无余涅槃中到底是什么？阿罗汉们还是不知道啊！因为不知道，所以无究竟乐。
《胜鬘经讲记》第二辑，页24-25
---------------------------------
All practitioners of Two-Vehicle Buddhism are afraidthat there will be nothing left of them after they enternirvana. They are fearful of total annihilation and theycannot help but harbor a bit of apprehension. Althoughthe Buddha states that entering remainderless nirvanadoes not entail total annihilation, they still feel uneasysince they cannot verify this fact themselves. Therefore,they are still fearful of the complete extinction of theiraggregates [skandhās], sense-fields [ayatanās] andsense-realms [dhātavas]. However, regardless of thisfear, in order to attain the remainderless nirvana, theystill have to enter a state of nothingness resulting fromthe elimination of the aggregates, sense-fields andsense-realms. From the arhats’ viewpoint, the fiveaggregates are enemies, foes, carbuncles, thorns, killersand ought to be extinguished. The five aggregates arelike a man holding a sword intending to cause harm.Indeed they will bind a person to uninterrupted cyclicexistence for uncountable eons. But what will be left inthe remainderless nirvana once the five aggregates areextinguished? The Two-Vehicle practitioners have noidea. The Buddha says the essence of the remainderlessnirvana is real, immutable, and permanent. But what isreally inside the remainderless nirvana? The arhatsremain in the dark. For these reasons, the arhats do nothave ultimate happiness.
A Discourse on the Srimaladevi Simhanada Sutra,Vol. 2, pp. 24-25
---------------------------------