Bharatiya Jyotihshastra (History of Indian Astronomy), translated by R. V. Vaidya v1.c5.78

v1.c5.78

“I am desirous of describing in brief, the interpretation of Saṁhitā rules which are necessary to be followed, while performing ceremonies relating to post-natal sacrament, naming the child, thread ceremony, marriage, travelling, etc., knowing fully well that Saṁhitās are ‘fruits’ of the tree of astronomy, of which the various forms of Horā are the ‘branches’ and elementary arithmetic, algebra and calculation of planetary places are the firm ‘roots’.”