Allah's Oneness demonstrated by causing the Plants to grow, sending down the Rain
Allah the Exalted said,
أَفَرَءَيْتُم مَّا تَحْرُثُونَ
(Do you not see what you sow.) in reference to tilling the earth and planting seeds inside it,
أَءَنتُمْ تَزْرَعُونَهُ
(Is it you that make it grow,) `do you cause these seeds to grow inside the earth,'
أَمْ نَحْنُ الزَرِعُونَ
(or are We the Grower) Allah says, `rather it is We Who cause the seeds to remain firmly and grow inside the earth.' Ibn Jarir recorded that Abu Hurayrah said that the Messenger of Allah ﷺ said,
«لَا تَقُولَنَّ: زَرَعْتُ وَلكِنْ قُلْ: حَرَثْت»
(Do not say, "Zara`tu (I made it grew)," but say, "Harathtu (I sowed tilled).") Abu Hurayrah added, "Have you not heard Allah's statement,
أَفَرَأَيْتُم مَّا تَحْرُثُونَ (Well, tell Me about that [ seed ] which you sow:...56:63) In the matter of human creation, man
The last answer is summarized thus in verse [ 73] نَحْنُ جَعَلْنَاهَا تَذْكِرَةً وَمَتَاعًا لِّلْمُقْوِينَ "We have made it a reminder [ of Our infinite power, and of the fire of hell ] and a benefit for travelers in deserts....56:73) The word muqwin is derived from the infinitive iqwa' and it comes from the root-word qiwa' which means 'waste, barren land, ruin or desert'. Thus the word muqwin means 'a traveler or a wayfarer of a desert who alights to prepare his meals'. The verse purports to say that all these creations are the result of Allah's power and wisdom.
Tazkirul Quran
Maulana Wahiduddin KhanOn ayahs 59–73
The birth of a human being from the womb of his mother, the growing of crops from the earth, the falling of rain, the availability of fire from fuel—all these things come directly from God. They should be treated as gifts of God and not as the results of human effort. Man should be grateful to God for all the blessings He has showered upon him.
Uthmani text of the Madinah mushaf (King Fahd Complex). Translation: Saheeh International. Tafsir via Quran.com.