Source: Tafsir al-Ahlam al-Kabir (Ibn Sirin)
The sky in a dream indicates the king, ruler, or palace. Whoever sees himself ascending to the sky will gain authority and high status, but with danger and arrogance. If he does not return, he will die. The lowest heaven indicates the abode of scholars. Looking at the sky indicates high ambition and drawing closer to God. A clear sky indicates the king's justice, and an overcast sky his injustice.
Source: Ta'tir al-Anam fi Ta'bir al-Manam (Al-Nabulsi)
The sky indicates one's country and dwelling. Whoever sees the sky split open and something good emerge from it, it indicates relief and goodness. If something frightening emerges, it indicates strife and tribulation. Whoever sees the sky is green, it indicates fertility and goodness in that year. If it is yellow, it indicates illness.
Source: Al-Isharat fi Ilm al-Ibarat (Ibn Shahin)
The vision of the sky is interpreted as the king. Whoever sees himself flying in the sky will travel far and gain honor. Whoever sees the gates of heaven open, the gates of sustenance and answered prayers will open for him. The sky falling on the earth indicates the death of the king or a general destruction.