فَرِحِيْنَ بِمَآ اٰتٰىهُمُ اللّٰهُ مِنْ فَضْلِهٖۙ وَيَسْتَبْشِرُوْنَ بِالَّذِيْنَ لَمْ يَلْحَقُوْا بِهِمْ مِّنْ خَلْفِهِمْ ۙ اَلَّا خَوْفٌ عَلَيْهِمْ وَلَا هُمْ يَحْزَنُوْنَۘ ( آل عمران: ١٧٠ )
Fariheena bimaaa aataa humul laahu min fadlihee wa yastabshiroona billazeena lam yalhaqoo bihim min fadlihee wa yastabshiroona billazeena lam yalhaqoo bihim min khalfihim allaa khawfun 'alaihim wa laa hum yahzanoon (ʾĀl ʿImrān 3:170)
Rejoicing in what Allah has bestowed upon them of His bounty, and they receive good tidings about those [to be martyred] after them who have not yet joined them – that there will be no fear concerning them, nor will they grieve. (Ali 'Imran  : 170)
1 Mufti Taqi Usmani
happy with what Allah has given them of His grace; and they feel pleased with the good news, about those left behind them who could not join them, that there shall be no fear for them nor shall they grieve.