"Then He rose towards the heaven" - Muhammad said: Meaning, He directed His intent toward it. "And it was smoke" - connected to the earth, according to the tafsir of al-Hasan. "He said to it and to the earth, 'Come, willingly or unwillingly'" - by way of subjugation and omnipotence. He said this to them before He created them. "They both said, 'We have come willingly'" - meaning, with what is within them. Muhammad said: "Willingly or unwillingly" is in the position of: 'Obey willingly with obedience, or be compelled unwillingly with compulsion.'
Tafsir of Surah Fussilat, verse 12.
﴿ثمَّ اسْتَوَى إِلَى السَّمَاء﴾ قَالَ محمدٌ: يَعْنِي: عمد لَهَا وَقصد ﴿وَهِي دُخان﴾ ملتصقة بِالْأَرْضِ؛ فِي تَفْسِير الْحَسَن ﴿فَقَالَ لَهَا وَلِلأَرْضِ ائْتِيَا طَوْعًا أَو كرها﴾ عَلَى وجْه السخرة وَالْقُدْرَة؛ قَالَ هَذَا لَهما قبل خلقه إيَّاهُمَا ﴿قَالَتَا أَتَيْنَا طائعين﴾ يَعْنِي: بِمَا فيهمَا. قَالَ محمدٌ: ﴿طَوْعًا أَو كرها﴾ بِمَنْزِلَة: أطيعا طَاعَة، أَو تكرهان كرها.
تَفْسِير سُورَة فصلت الْآيَة ١٢.