Buddhist Dictionary of Pali Proper Names by G P Malalasekera
Indasālaka
Indasālaka:A cave,the size of a bed in a monk’s cell,near Vallipāsāna Vihāra.
It was the residence of Mahā-Nāgasena Thera.
When he was ill,eight thousand arahants and the inhabitants of the two deva worlds,led by Sakka,came to look after him.They all found room in the cave.MT.552.