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Combination of magnetic field and internal heat generation effects on double-diffusive convection in nanofluids layer is applied in the existence of Soret and Dufour effects. The model employed for the nanofluids as- sociates with the Brownian motion and thermophoresis. Linear stability theory upon normal mode technique is used and the eigenvalue solution is obtained by using the Galerkin technique. On the stationary convection, it is observed that the application of magnetic field stabilizes the system while internal heat generation destabilizes the system. The analysis also reveals that it is possible to delay the onset of convection through nanofluids parameters in the system. [ABSTRACT FROM AUTHOR]