ADHIKR

‘If you are called for prayer on the Day of Congregation’ mentioned in the verse means if you are called to the swalath on Friday which is instead of ‘Dhuhr swalath’ of other days. Since the verse addresses the believers in plural form, it means that when there is a group of believers only, performing Congregational prayer is commanded. It is told in verse 24: 55 that if there is group of believers, they will get ruling power; and in verses 9: 5, 123 it is told that if there is a group of believers, the believers should kill the Hypocrites who falsify Islam among the mankind by hiding and rejecting Adhikr.  
After 30 years of the departure of Messenger Muhammed there had no any group of believers anywhere in the world, instead there had only so many groups of Arabic Qur’an Reading Fujjar including the Hypocrites and their Mushrik followers as explained in verses 30: 30-32; and 48: 6 who belonged to disbeliever Satan’s party as explained in verse 58: 19. These Fujjar have read the verse 83: 29 saying that the Mujirims will ridicule the believers. As explained in verse  7: 40, for these Mujirims, the doors of the heavens won’t be opened for recording their deeds in the ledger ‘Illiyyeen’ of the Paradise mentioned in the verse 83: 18.  
Since there is no any group of believers anywhere in the world, through the verses 9: 73; and 25: 52 the odd believer is commanded to do great Jihad with Adhikr towards the Hypocrites and Kuffar who hide and reject Adhikr. Since such disbelievers are earning the Hellfire by performing swalath, fasting, Hajj, Umra, etc. as explained in verses 25: 65-66,  the believers who pray by soul as ‘Oh Lord! You make us leaders for the heedful who follow Adhikr’ as explained in verse 25: 74, are not allowed to participate in their congregational prayer or perform funeral prayer and seek forgiveness for them as explained in verses 9: 84-85; 113-114; and 47: 19.  See explanation 9: 71-72; 29: 45; and 58: 22.
Without saying ‘if you are called for prayer on the Day of Congregation, then you hurry to the congregational prayer’ it is told that ‘if you are called for prayer on the Day of Congregation, then you hurry to the Remembrance of Allah’. That is if there are believers and are called for the congregational prayer on Friday, they should attend hurryingly to the Remembrance of Allah which means to the speech which causes to have the Remembrance of Allah by leaving all their trades and other engagements. In other words, the Speech done before the prayer should be Adhikr-the Speech of Lord-considering the verses 2: 113, 213; and 4: 105. The speech should also be aiming to form the single group of believers as explained in verses 3: 103; 49: 9-10; and 58: 22. Otherwise, Lord Allah will make assemble the disbelieving Hypocrites and their blind following disbelievers in the Hellfire as explained in verse 4: 140. It is told in verse 10: 100 that without the Permission of Allah-Adhikr, none can become a believer. Since Adhikr-the Best Interpretation of Lord’s Book mentioned in verse 25: 33-is codified as a Book today, the mode of prayer and life style of the odd believer who testifies Adhikr should be as explained in verses 7: 205-206. See explanation 35: 28-29; 39: 23; and 51: 55.