One verse

Bhagavad Gita 4.7

4.7

यदा यदा हि धर्मस्य ग्लानिर्भवति भारत | अभ्युत्थानमधर्मस्य तदात्मानं सृजाम्यहम् ||४-७||

yadā yadā hi dharmasya glānirbhavati bhārata . abhyutthānamadharmasya tadātmānaṃ sṛjāmyaham ||4-7||

yadā yadā
whenever and wherever
hi
certainly
dharmasya
of religion
glāniḥ
discrepancies
bhavati
become manifested
bhārata
O descendant of Bharata
abhyutthānam
predominance
adharmasya
of irreligion
tadā
at that time
ātmānam
self
sṛjāmi
manifest
aham
I

Whenever and wherever there is a decline in religious practice, O descendant of Bharata, and a predominant rise of irreligion – at that time I descend Myself.