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English Translation (preserving Jain terms):
The Commentary on the Sutra Kritanga Sutra
The meaning is as follows: Those who are not knowers of the ultimate truth, but have arisen for the sake of religion and virtue, having abandoned their mother and father, declare that "we have taken up the vow of a Shramana (ascetic)." However, they initiate and engage in the activity of Agnikaya (fire-worship), that is, they engage in the activity of Agnikaya by consuming the prescribed food prepared through cooking, heating, etc., and by approving of such activities done by others.
These heretical or lay people who engage in the initiation of Agnikaya are "Kushila" (of corrupt conduct). Here, the indication of abandoning the mother and father suggests that abandoning them is very difficult. Therefore, their mention is made. It is also to be understood that abandoning brothers, sons, etc. is also included here.
So, how can one of corrupt conduct be "Kushila" (of good conduct)? The author shows that those who have existed, exist, and will exist, are called "Bhuta" (beings). The term "Bhuta" refers to living beings. Those who harm living beings for their own happiness are "Kushila."
The heretical people, through the penance of the five fires, torment their bodies, and through the rituals of Agnihatra (fire-oblation), etc., desire to attain heaven. Similarly, the worldly people, by cooking, getting others to cook, etc., in the form of initiating and engaging in the activity of Agnikaya, desire happiness. All of them are "Kushila."
Explaining how the destruction of life occurs in the initiation and engagement of Agnikaya, it is said:
"One who kindles the fire should extinguish the lives, and one who extinguishes the fire should extinguish the lives. Therefore, the wise should observe the Dharma and the learned should not initiate the fire."
The meaning is: One who initiates the fire activity (Agnikaya) destroys the lives of the beings residing in the firewood, etc., and one who extinguishes the fire also destroys the lives of the beings residing in the fire. Therefore, the wise person should observe the Dharma and the learned should not initiate the fire activity.