Bhagavad Gita Chapter 4 Verse 7
भगवद् गीता अध्याय 4 श्लोक 7

यदा यदा हि धर्मस्य ग्लानिर्भवति भारत।
अभ्युत्थानमधर्मस्य तदाऽऽत्मानं सृजाम्यहम्।।4.7।।



English Translation - Swami Gambirananda
4.7 O scion of the Bharata dynasty, whenever there is a decline one virtue and increase of vice, then do I manifest Myself.


English Translation of Ramanuja's Sanskrit Commentary
4.7 There is no restriction as to the time of My birth; whenever the Dharma taught by the Vedas that must be observed according to the arrangements of the four stations and the four stages of life declines, and Adharma, its opposite, increases, then I Myself, by My own will and in the manner stated, incarnate Myself.

Sri Krsna gives the purpose of His birth.


Transliteration Bhagavad Gita 4.7Yadaa yadaa hi dharmasya glaanir bhavati bhaarata;
Abhyutthaanam adharmasya tadaatmaanam srijaamyaham.


Word Meanings Bhagavad Gita 4.7yadā yadā—whenever; hi—certainly; dharmasya—of righteousness; glāniḥ—decline; bhavati—is; bhārata—Arjun, descendant of Bharat; abhyutthānam—increase; adharmasya—of unrighteousness; tadā—at that time; ātmānam—self; sṛijāmi—manifest; aham—I