Buddhist Dictionary of Pali Proper Names by G P Malalasekera
Kalingara Sutta
Kalingara Sutta:Preached at the Kūtāgārasālā in Vesālī.As long as the Licchavis sleep on straw (kalingara) so long will they be able to protect themselves from their enemy,Ajātasattu; when they begin to sleep on soft couches they will suffer defeat.Thus it is also with monks and Māra.S.ii.267f.