Manava Dharmashastra 3.22

3.22

yo yasya dharmyo varṇasya guṇadoṣau ca yasya yau
tad vaḥ sarvaṃ pravakṣyāmi prasave ca guṇāguṇān //

Which is lawful for each caste (varna) and which are the virtues or faults of each (rite), all this I will declare to you, as well as their good and evil results with respect to the offspring.