यदा यदा हि धर्मस्य ग्लानिर्भवति भारत। अभ्युत्थानमधर्मस्य तदाऽऽत्मानं सृजाम्यहम्॥
yadā yadā hi dharmasya glānirbhavati bhārata abhyutthānamadharmasya tadā''tmānaṃ sṛjāmyaham
Meaning
Whenever spirituality decays and materialism is rampant, then, O Arjuna, I reincarnate myself.
English translation by Shri Purohit Swami (1935), public domain. Sanskrit text in the public domain. About Duvidha