Verse 9.21
ते तं भुक्त्वा स्वर्गलोकं विशालं क्षीणे पुण्ये मर्त्यलोकं विशन्ति । एवं त्रयीधर्ममनुप्रपन्ना गताग...
वे उस विशाल स्वर्गलोकको भोगकर पुण्य क्षीण होनेपर मृत्युलोकको प्राप्त होते हैं। इस प्रकार स्वर्गके साधनरूप तीनों वेदोंमें कहे हुए सकामकर्मका आश्रय लेनेवाले और भोगोंकी कामनावाले पुरुष बार बार आवागमनको प्राप्त – होते हैं, अर्थात् पुण्यके प्रभावसे स्वर्गमें जाते हैं और पुण्य क्षीण होनेपर मृत्युलोकमें आते हैं|
However, Arjuna, after all of their good Karma (action) has expired, the enjoyment of all of the happiness, joy and peace that they have encountered in heaven ends as well, and therefore, they are reborn in the world (subject to the cycle of birth and death) once more.
Therefore, Arjuna, all beings who perform attached Karma (actions performed for the purpose of gaining something, i.e. fruits, in return for the action), are always born and reborn into this cycle of birth and death according to the three Vedas.