ते नाधीतं गुरोः सर्वं ते न सर्वमनुष्ठितम् । येन विप्रेण शिरसि त्रिपुंड्रं भस्मना कृतम् ३१ ।
If a brahmin wears the Tripuṇḍra with the ash on his forehead he must be considered as having learnt everything from the preceptor and as having performed every sacred rite.