"Jena Smaran Thi" (જેના સ્મરણથી) is a Gujarati phrase commonly found in Jain prayers and bhajans. It means "by whose remembrance," and is often used to refer to the Tirthankaras, Arihantas, or Siddhas—those who have attained liberation or have achieved a high spiritual state.

In Jainism, it is believed that by remembering or meditating upon the qualities and virtues of the Arihantas, Siddhas, Acharyas, Upadhyayas, and Sadhus (the Panch Parmeshthi), one can purify their mind, accumulate punya (merit), and progress on the spiritual path. Many Jain prayers begin with lines such as:

"Jena smaran thi dukh jaay..." (જેના સ્મરણથી દુઃખ જાય...) "By whose remembrance sorrows go away..."

For example, in the famous Jain prayer, "Jena Smaranthi Dukh Jaay," devotees express how remembering the Arihantas and Siddhas removes suffering and brings peace.

Thus, "jena smaran thi" expresses the power and significance, in Jainism, of remembering the enlightened beings and their virtues as a means of spiritual upliftment.