Bhagavad Gita 8.23

यत्र काले त्वनावृत्तिमावृत्तिं चैव योगिनः।प्रयाता यान्ति तं कालं वक्ष्यामि भरतर्षभ॥

yatra kāle tvanāvṛttimāvṛttiṃ caiva yoginaḥ |prayātā yānti taṃ kālaṃ vakṣyāmi bharatarṣabha ||

Now I will tell you, O chief of the Bharatas, the times of departure at which the Yogis will return or not return.

Now, I will tell you, O Arjuna, the times at which, if the mystics go forth, they do not return, and at which they go forth only to return.

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