सांख्ययोगभेदः तथा योगबलोपदेशः
Sāṃkhya–Yoga Distinction and Instruction on Yogic Strength
सब ओरसे घिरे हुए मुनिवर उशना उस शिक्षद्वारको देख नहीं पाते थे। अतः भगवान् शंकरके तेजसे दग्ध होते हुए वे उदरमें ही इधर-उधर चक्कर काटने लगे ।।
sa vai niṣkramya śikṣena śukratvam abhipedivān | kāryeṇa tena nabhaso nādhyagacchat madhyataḥ ||
毗湿摩说道:那位大牟尼乌沙那被四面围困,无法看见名为“师迦沙”(Śikṣā)的出口;又在腹中为商羯罗(湿婆)的炽力所灼,便在其中来回盘旋。其后他忽从“师迦沙”之门脱出;因由此门而出,遂得名“舒克罗”(Śukra)。也正因这特殊的出离方式及其后果,他不从天空的正中穿行。
भीष्म उवाच
The verse presents an etiological lesson: actions and circumstances can crystallize into enduring identity (a name) and lasting constraints (a fixed course). It highlights causality—how a specific ‘kārya’ (result) follows from a particular act and becomes a defining mark.
Uśanā emerges from a passage called Śikṣa; because he exits by that route, he becomes known as Śukra. The text then states that due to this causal consequence he does not traverse the middle of the sky, explaining a traditional belief about his movement.