Bhagavatapurana 11.23.52

11.23.52

ātmā yadi syāt sukha-duḥkha-hetuḥ kim anyatas tatra nija-svabhāvaḥ /
na hy ātmano 'nyad yadi tan mṛṣā syāt krudhyeta kasmān na sukhaṃ na duḥkham //

53. If one’s own self is the cause of pleasure and pain, evidently there is nothing from another: in that case the cause is

one’s own nature: if there were any other than Atman, it must be unreal and how could there be any occasion for anger, for, in the absence of the cause, there could be no pleasure or pain.