Said in the last sentence of verse 31 was: مِّن قَبْلِ أَن يَأْتِيَ يَوْمٌ لَّا بَيْعٌ فِيهِ وَلَا خِلَالٌ (be-fore there comes a day in which there is neither trade nor friendship). The word: خِلَال (khilal) used here can be taken as the plural form of خُلَّۃُ (khullah) which means selfless friendship. Then, this word could also be taken as a verbal noun of the derived form of مُفَاعلۃ (mufa` alah), such as qital, difa` etc. In that case, it would mean a friendship between two per-sons which is mutual and sincere. This sentence relates to both the injunctions of Salah and Sadaqah described above.
The core sense of the injunction is that now is the time to act. Allah Ta` ala has blessed you with the necessary strength and time to make your Salah. And if you have missed any of your Salah in the past due to negligence, make amends and do the qala' (replacement of missed Salah) for it. Similarly, your wealth is in your possession today and by spending it in the way of Allah you can make it work for you particularly for the good of your eternal life. But, lest you forget, the day is coming when both these options will be taken away from you. Neither will your bodies remain active enough to make your Salah, nor will you have any wealth in your possession which you could use to pay for rights wasted. And on that day, there is going to be no buying and selling, no transactions through which you could buy something, through which you could expiate for shortcomings and sins. And on that day, mutual friendships and personal relationships will not work as well. No friend, no matter how dear, will be able to carry the burden of sins committed by another, nor will he find any way to somehow remove the punishment due against him.
The word: یَوم (yowm: a day) obviously means the day of Resurrection (Al-Hashr) and the day of Doom (Al-Qiyamah). Then, it could also be said that it may be the day of one's death because all these signs start showing up immediately from the time of death when one is left without any ability to do anything, nor does wealth stay in the possession of its owner ready to leave the world of his experience behind.
Injunctions and Instructions
As for the statement that no friendship will work for anyone on the day of Qiyamah (31), it means what will not work there will be friend-ships based solely on material interests. But, those who maintain friend-ships and relationships for the sake of Allah and for what is done to serve the interests of His revealed religion will still work at that time as well, for the good servants of Allah who are accepted in His sight will intercede on behalf of others as it has been reported in many ahadith. And the Qur'an itself says: 'those who were friends to each other in the life of the world will turn into enemies to one another wishing to put the blame for their sin on a friend and absolve themselves of it, except those who fear Allah - 43:67.' This is so because there too the people of Taqwa, those who act right in fear of Allah, will be able to put in a good word for each other by way of helping them out.
In the third, fourth and fifth verses (32-34), after recounting the major blessings of Allah Ta’ ala, human beings have been invited to worship and obey Him. They are told that it is Allah alone who has created the heavens and the earth on which depends the emergence and survival of human existence. Then, He sent water down from the sky through which He created produce of many kinds so that they can serve as sustenance for them. The word: الثَّمَرات (ath-thamarat) is the plural form of ثَمَرَہ (thamarah) which is the end product of everything. Therefore, included under 'ath-thamarat' is everything which becomes for human beings their food, dress or a home to live in - because, the word: رِزَق (rizq) translated as 'sustenance' in this verse covers all human needs. (Mazhari)