Translation:you are at variance with one another (concerning the Hereafter).
Segments 0 | Innakum 1 | lafee | لَفِي | never; ever; at all (chiefly with the past tense in negative senses) | Separable Preposition 2 | qawlin 3 | mukhtalifinمُتَخْتَلِفٍ | Active Participle | Form VIIIComment: