Mahabharata 6.26.7

यदा यदा हि धर्मस्य ग्लानिर्भवति भारतअभ्युत्थानमधर्मस्य तदात्मानं सृजाम्यहम्

yadā yadā hi dharmasya glānirbhavati bhārataabhyutthānamadharmasya tadātmānaṃ sṛjāmyaham

Our plain-language meaning of this verse is waiting for scholar review.