Everything has its place, its role and its function in the grand scheme of things. Rituals were used by certain rishis to invoke and propitiate certain gods for material and other gains such as healing, having progeny, material prosperity. Later they were as means to invoke certain deities grow in consciousness and progress in terms of knowledge, power and other capacities. Later they were discarded by the seers of the Upanishads as they found a more direct inner path leading to the Divine. The Gita itself does not speak of any specific ritual but rather turning all actions into a ritual sacrifice to the highest Divine. So there is nothing like a rigid dos and donts in Sri Aurobindo’s Yoga. It is just that it is not necessary because it accomplish its aim through an inner psychological process.
Affectionately,
Alok Da