Bhagavad Gita 17.24
Duty & Righteousness
17.24 Therefore, with the utterance of "Om" are the acts of sacrifice, gift and austerity as enjoined in the scriptures, always begun by the students of Brahman.
तस्मादोमित्युदाहृत्य यज्ञदानतपःक्रियाः | प्रवर्तन्ते विधानोक्ताः सततं ब्रह्मवादिनाम् ||१७-२४||
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