This is from the completion of Musa's speech concerning the description of His Lord when Fir`awn asked him about Him. He (Musa) said,
﴿الَّذِى أَعْطَى كُلَّ شَىءٍ خَلْقَهُ ثُمَّ هَدَى﴾
(He Who gave to each thing its form and nature, then guided it aright.) Then, Fir`awn attempted to present some argumentative rebuttal during Musa's reply. Yet, Musa continued by saying, "He is the One Who made the earth as a bed for you.'' Some recited the word as Mihadan and others recited it as Mahdan, which means `a place of rest that you settle down upon.' It also may mean `that which you stand upon, sleep upon or travel upon its back.'
﴿وَسَلَكَ لَكُمْ فِيهَا سُبُلاً﴾
(and has opened ways for you therein.) This means, `He made roads for you to walk upon their shoulders.' This is just as He, the Exalted, said,
﴿وَجَعَلْنَا فِيهَا فِجَاجاً سُبُلاً لَّعَلَّهُمْ يَهْتَدُونَ﴾
(And placed therein broad highways for them to pass through, that they may be guided.) ﴿21:31﴾
﴿وَأَنزَلَ مِنَ السَّمَآءِ مَآءً فَأَخْرَجْنَا بِهِ أَزْوَاجاً مِّن نَّبَـتٍ شَتَّى﴾
(and has sent down water from the sky. And We have brought forth with it various kinds of vegetation.) referring to the various species of plants, such as vegetation and fruits. Some are sour, some are sweet, some are bitter and there are other kinds as well.
﴿كُلُواْ وَارْعَوْا أَنْعَـمَكُمْ﴾
(Eat and pasture your cattle (therein);) meaning, `something that is food for you and a palatable fruit for you, and something that is for your cattle as fodder for them, both green and dry.'
﴿إِنَّ فِى ذلِكَ لأيَـتٍ﴾
(Verily, in this are Ayat.) This means proofs, signs and evidences.
(for men of understanding.) meaning those who possess correct and upright intelligence realizing that there is no god worthy of worship except Allah, and there is no true Lord other than Him.
﴿مِنْهَا خَلَقْنَـكُمْ وَفِيهَا نُعِيدُكُمْ وَمِنْهَا نُخْرِجُكُمْ تَارَةً أُخْرَى ﴾
(Thereof We created you, and into it we shall return you, and from it We shall bring you out once again.) meaning, `the earth is your beginning. For your father, Adam, was created with dirt from the surface of the earth. You also will be returned to the earth. This means that you will become dirt when you die and decay.' The statement, "And from it We shall bring you out once again,'' means,
﴿يَوْمَ يَدْعُوكُمْ فَتَسْتَجِيبُونَ بِحَمْدِهِ وَتَظُنُّونَ إِن لَّبِثْتُمْ إِلاَّ قَلِيلاً ﴾
(On the Day when He will call you, and you will answer with His praise and obedience, and you will think that you have stayed (in this world) but a little while!) ﴿17:52﴾ This Ayah is similar to Allah's statement,
﴿قَالَ فِيهَا تَحْيَوْنَ وَفِيهَا تَمُوتُونَ وَمِنْهَا تُخْرَجُونَ ﴾
(He said: "Therein you shall live, and therein you shall die, and from it you shall be brought out.'') ﴿7:25﴾