وَفِى ٱلۡأَرۡضِ ءَايَـٰتٌ۬ لِّلۡمُوقِنِينَ (٢٠) وَفِىٓ أَنفُسِكُمۡۚ أَفَلَا تُبۡصِرُونَ (٢١) وَفِى ٱلسَّمَآءِ رِزۡقُكُمۡ وَمَا تُوعَدُونَ
SubhanAllah, Tafseer of Surah ad-Dhaariyaat Ayaat 20-23 from tafseer of Ibn Katheer
Allah the Exalted and the Blessed said:
And on the earth are signs for those who have faith with certainty'
Allah says that there are signs on earth that testify to the might of the Creator and His boundless ability. These signs include what Allah placed on the earth, the various plants, animals, valleys, mountains, deserts, rivers and oceans. He also created mankind with different languages, colors, intentions and abilities, and a variety among them, differences in the power of understanding and comprehension, their deeds, and ultimately earning happiness or misery. Allah put every organ in their bodies in its rightful place where they most need it to be. So He said؛
'And also in yourselves. Will you not then see'Qatadah commented, "He who thinks about his own creation will realize that he was created with flexible joints so that it is easy for him to perform acts of worship.''Allah the Exalted said next,
'And in the heaven is your provision'meaning, rain,
'and that which you are promised'meaning Paradise. This was said by Ibn `Abbas, Mujahid and several others.Allah said:
'Then by the Lord of the heaven and the earth, it is the truth, just as you can speak'
Allah is swearing by His honorable Self, all of the matters of the Judgement, Resurrection, and Recompense that they have been promised shall certainly occur. Therefore, it is the truth, there being no doubt about it, so do not doubt its coming, just as you do not doubt that you can speak When he would talk to one of his friends, Mu`adh used to say: "What I am saying is as true as your being here.''
Tafseer of Surah ad-Dhaariyaat Ayaat 20-23 from tafseer of Ibn Katheer