فَرِحِينَ بِمَآ ءَاتَىٰهُمُ ٱللَّهُ مِن فَضۡلِهِۦ وَيَسۡتَبۡشِرُونَ بِٱلَّذِينَ لَمۡ يَلۡحَقُواْ بِهِم مِّنۡ خَلۡفِهِمۡ أَلَّا خَوۡفٌ عَلَيۡهِمۡ وَلَا هُمۡ يَحۡزَنُونَ ١٧٠
Rejoicing in what Allāh 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.
Translation: Saheeh International (English)
Each word's meaning and sound
They are delighted and rejoicing in what Allah has given them from His grace, and looking forward to meeting their brothers who are still on earth. If they are killed during a similar struggle, then they will receive the same grace as them. There is no fear on them in terms of what awaits them in the Afterlife, and no sorrow about any worldly fortunes that passed them by.
Al-Mukhtasar in interpreting the Noble Quran