Couplet 121

از ادب پر نور گشت ست ایں فلک

This sky has become full of light due to respect

وز ادب معصوم و پاک آمد ملک

The angels too become pious and innocent due to respect

           ‘از in both the parts of the couplet is for change i.e. brilliance of sky through sun, moon and stars & angels are called innocent & pure, because of their performance of decency (ادب) towards Allah Ta’ala. The respectfulness of sky is that when it was asked to him to be obedient willingly or by force, he immediately replied that I am here willingly, as in Quran (41:11):

Then He directed Himself to the heaven while it was smoke and said to it and to the earth, "Come [into being], willingly or by compulsion." They said, "We have come willingly."

              And the respectfulness of angels is that at the time of examination of knowledge of names, they submitted (Quran 2:32):

They said, "Exalted are You; we have no knowledge except what You have taught us. Indeed, it is You who is the Knowing, the Wise."

                           Further they were also respectful to the decision of making of Prophet Adam as vicegerent as against the Satan  Iblees.