Bhagavad Gita 4.5
Lord Shri Krishna replied: I have been born again and again, from time to time; thou too, O Arjuna! My births are known to me, but yours are unknown to you.
श्री भगवानुवाच
बहूनि मे व्यतीतानि जन्मानि तव चार्जुन।
तान्यहं वेद सर्वाणि न त्वं वेत्थ परन्तप॥śrī bhagavānuvāca
bahūni me vyatītāni janmāni tava cārjuna|
tānyahaṃ veda sarvāṇi na tvaṃ vettha parantapa||
English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).