Srimad Bhagavatam Canto 10, Chapter 88, Text 15

SB 10.88.15

sa aha devam girisam
 upadhavasu siddhyasi
yo ’lpabhyam guna-dosabhyam
 asu tusyati kupyati
 
Translation: 
 
Narada told him: Worship Lord Siva and you will soon achieve success. He quickly becomes pleased by seeing his worshiper’s slightest good qualities — and quickly angered by seeing his slightest fault.
Srimad Bhagavatam Canto 10, Chapter 88, Text 14
Srimad Bhagavatam Canto 10, Chapter 88, Text 16