Dhammapada Verse 6
The Story of Kosambi Bhikkhus
The bhikkhus of Kosambi had formed into two groups. One group followed the master of Vinaya and the other followed the teacher of the Dhamma and they were often quarrelling among themselves. Even the Buddha could not stop them from quarrelling; so he left them and spent the vassa, residence period of the rains, all alone in Rakkhita Grove near Palileyyaka forest. There, the elephant Palileyya waited upon the Buddha.