And if whatever trees upon the earth were pens and the sea (31:27)

Almuntakhab Fi Tafsir Alquran Alkarim

If the wood of all the trees growing on earth were to be manufactured into pens added to every other material having the function of a writing pen, and the vast body of water on the surface of the earth and seven times as much were ink serving the purpose of committing Allahs words to writing, never would Allahs words be exhausted; Allah is indeed Azizun and Hakimun (the Source of wisdom and wise mysterious dispensations)

Tafseer Tafheem-ul-Quran by Syed Abu-al-A'la Maududi

(31:27) If all the trees on earth become pens, and the sea replenished by seven more seas were to supply them with ink, the Words of Allah would not be exhausted. *48Verily Allah is Most Mighty, Most Wise.

And if whatever trees upon the earth were pens and the sea meaning

*48) "Allah's Words": Allah's creative works and the manifestations of His power and wisdom. This very theme has been presented in Surah AI-Kahf: l()<) above a little differently. A person might think there is exaggeration in this. but if one considers the matter a little deeply, one will feel that there is in tact no exaggeration whatever in it. AII the pens that can be made from the trees of the world and aII the ink that can be provided by the oceans of the world, which are replenished by seven more oceans, cannot perhaps help prepare a complete list of aII the reations in the universe, not to speak of aII the manifestations of Allah's power and wisdom and creative works. When it is impossible even to count aII the things found on the earth only, how can one bring into writing aII the creations found in this limitless universe?
Here, the object is to make man realize that no creature can become a deity and an associate in the works of AIIah. Who has brought into being such a vast Universe, Who is administering its affairs and Whose powers and resources are limitless. Not to speak of becoming an associate in the administration of this vast Kingdom, it is not within the power of any creation to obtain a mere nodding acquaintance with the minutest portion of it. How can then one imagine that one or the other creation can have any share in the Divine powers and authority on the basis of which it may answer prayers and make or un-make destinies?
 

And if whatever trees upon the earth were pens and the sea meaning in Urdu

زمین میں جتنے درخت ہیں اگر وہ سب کے سب قلم بن جائیں اور سمندر (دوات بن جائے) جسے سات مزید سمندر روشنائی مہیا کریں تب بھی اللہ کی باتیں (لکھنے سے) ختم نہ ہوں گی بے شک اللہ زبردست اور حکیم ہے