सिद्धः स्वतन्त्रभावः
In plain words
The state of freedom is attained.
The commentators
Śivasūtra with Kṣemarāja's Vimarśinī
एवं स्फुरत्तात्मकसत्त्वासादनादेव अस्य योगिनः - सिद्धः स्वतन्त्रभावः ॥ १३ ॥ सिद्धः संपन्नः स्वतन्त्रभावः सहजज्ञत्व-कर्तृत्वात्मकम् अशेषविश्ववशीकारि स्वातन्त्र्यम् । यदुक्तं श्रीश्रीनाथपादैः श्रयेत्स्वातन्त्र्यशक्तिं स्वां सा श्रीकाली परा कला । इति । श्रीस्वच्छन्देऽपि सर्वतत्त्वानि भूतानि मन्त्रवर्णाश्च ये स्मृताः । नित्यं तस्य वशास्ते वै शिवभावनया सदा ॥ इति ॥ १३ ॥
In plain words
The free state is accomplished. So, just through gaining sattva, whose nature is pulsing radiance, for this yogin: Accomplished, achieved, is the free state: svātantrya, made of innate knowing and doing, which brings the whole universe under control. As the revered Śrīnātha says: "Let him take refuge in his own power of freedom: she is Kālī, the supreme kalā." And the Svacchanda too: "All the tattvas, the elements, and the mantras and letters that are taught: these indeed are ever under his control, through contemplation of Śiva, always."