Shiva Purana
यदायदा हि लोकस्य दुःखं किञ्चित्प्रजायते ॥ तदातदावतीर्णस्त्वं करिष्यसि निरामयम्॥ २१॥
Whenever any misery torments the world you incarnate yourself and make it free from distress and ailment.
english translation
yadAyadA hi lokasya duHkhaM kiJcitprajAyate ॥ tadAtadAvatIrNastvaM kariSyasi nirAmayam॥ 21॥
hk transliteration by Sanscript