Ат-Тур 52:37–43

{ 1} This is an answer to one of the objections frequently raised by the disbelievers of Makkah against the prophethood of the Holy Prophet . They used to ask why he was chosen for messenger-ship, and not one of the outstanding chiefs of the tribe. The answer given in this verse is that the selection of prophets is the exclusive prerogative of Allah. He has the treasures of knowledge, and it is He who decides to whom they should be given. The attitude of those who raise objections against His decision is tantamount to claiming that the disposal of these treasures should have been in their hands, and they should have the decisive power to select prophets. (Muhammad Taqi Usmani)

{ 1} It means that their arguments against Islam having failed on rational grounds, the only possibility was that they had a direct link with Allah whereby they have ensured that their faith was true, but no one could bring any proof of having such a link with Allah. (Muhammad Taqi Usmani)

{ 2} This points out to the demand of the pagans of Makkah that they would not believe in the Holy Prophet unless he brings some pieces of the sky falling down from above. (See 17:92 and 26:187 in the Qur an) The answer given is that even if Allah fulfils this absurd demand, they would still not believe and would seek other excuses like claiming that the mass they are seeing is nothing but a cloud. (Muhammad Taqi Usmani)