 Vaidyanatha Dikshita in Chapter VII Sloka 130 of his Jataka Parijata gives two different versions of Kahala yoga, he states that if the lords of the 9th and the 4th be in kendra positions with respect to each other and if the lord of the lagna is strong, the yoga produced is Kahala.If the lord of the 4th bhava occupying its exaltation or its own sign be aspected by or in conjunction with the lord of the 10th bhava, the yoga will be such as the foregoing.This particular sloka is reproduced from Parashara’s Brihat Parasara Hora Shastra (Chapter XXXIII.9).