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Upasargadhyayana Tika-artha - The meaning of 'ruksha' is 'samyama' (restraint). The general meaning of 'ruksha' is dry or insipid. For those who desire physical pleasures, even 'samyama' is insipid. Those who are incapable of observing that 'samyama', are afraid of external austerities like fasting, etc. and internal austerities like svadhyaya (self-study) and dhyana (meditation), they experience sorrow in progressing on the path of 'samyama', just as a weak old ox experiences distress while climbing a steep path. Even a young ox is likely to experience depression and suffering while climbing a steep path. The use of the words 'jaraggava-jaradva-jirnnapada' here is to illustrate this sentiment. Even those who are courageous, strong and wise, are afflicted by obstacles and adversities. Then what to say about those who have been discussed earlier.
Evam nimantanam laddham, mucchiya giddha itthisu.
Ajjhuppanna kamehi coijjanta gaya giham.
Translation - Having obtained an invitation, they became infatuated and greedy towards women. Attracted by sensual pleasures, they went back to the household life, even though they were urged by the teacher (guru) to observe restraint (samyama).
Tika - The verse says that having obtained an invitation accompanied by the provision of the means for sense enjoyment, they became extremely attached to those means of sense enjoyment, such as elephants, horses, chariots, etc. and greedy towards women, their minds being absorbed in sensual pleasures. Though urged by the teacher (guru) to observe restraint (samyama), they were unable to make the effort, being weak-willed, and returned to the household life, abandoning the life of renunciation.
The second objective of the study of 'Upasargadhyayana' is complete.